SPREADSHEETS SERIES No. 0029SA

Wall Thickness Calculation of Ellipsoidal Head 2:1 Under Internal Pressure

ASME Section VIII Div 1 - UG-32 - Formed Heads, and Sections, Pressure on Concave Side

UG-32(c) Ellipsoidal Heads with ts/L ≥ 0,002

(Enter values in yellow cells for calculations)

DATA INPUT

Design Conditions

Material

Design Pressure, Pd =

barg

Head Material Specification ^{(1 to 7)}

Design Temperature, Td =

°C

Allowable Stress Head, S =

MPa

Welding Efficiency, E =

Dimensions

See Table UW-12

Inside Diameter of the head skirt, Di =

Corrosion Allowance, CA =

Nominal wall thickness before forming ⁽⁸⁾, tn =

Minimum specified thickness after forming ⁽⁹⁾, tf =

Minimum required thickness after forming, tr =

Outside Diameter of the head skirt, Do =

Straight skirt length ^(10)(11), SK =

Check If tr ≤ tn

Check If tr ≤ tf

Notes:

(1)

S ≤ 66.66% of σy @ temp.

(2)

S > 66.66% but < 90% of σy @ temp.

(3)

t ≤ 65

(4)

65 < t ≤ 100

(5)

100 < t ≤ 150

(6)

Tensile strength of the Section IX reduced section tension test is not less than 690 MPa.

(7)

Tensile strength of the Section IX reduced tension test less than 690 MPa but not less than 655 MPa.

(8)

It is recommended a nominal thickness before forming 15% higher than the minimum specified thickness to ensure after forming thickness is above it.

(9)

As per UG-79 (d)(3) The reduction in weld thickness after forming shall not exceed 1/32 in. (1 mm) or 10% of the nominal thickness of the adjoining surface, whichever is less.

(10)

As per UG-32(k) All formed heads, thicker than the shell and concave to pressure, intended for butt welded attachment, shall have a skirt length sufficient to meet the requirements of Figure UW-13.1, when a tapered transition is required. All formed heads concave to pressure and intended for butt welded attachment need not have an integral skirt when the thickness of the head is equal to or less than the thickness of the shell. When a skirt is provided, its thickness shall be at least that required for a seamless shell of the same inside diameter.

(11)

As per UG-32(l) Heads concave to pressure,intended for attachment by brazing, shall have a skirt length sufficient to meet the requirements for circumferential joints in Part UB.

S ≤ 66.66% of σy @ temp.

CALCULATIONS

Ellipsoidal Head 2:1

with tf/L ≥ 0.002

Thickness after forming adjusted for corrosion, nt =

nt = tf-CA

Inner diameter with corrosion removed, D =

D = Di + 2CA

Inside depth of the ellipsoidal head with corrosion removed, h

(For Ellipsoidal head 2:1 h = D/4)

Head Proportion = D/2h

Factor K1

(The value is obtained from Table UG-37)

Inside spherical or crown radius, L = k1D

Inside knuckle radius ⁽¹²⁾, r =

Wall Thickness [UG-32(c)]

Minimum required thickness after forming, t =

t =

P D

2 S E - 0.2 P

Minimum required thickness after forming, tr =

t_r =

P D

+ CA

2 S E - 0.2 P

Check If tr ≤ tf

Maximum allowable working pressure [UG-32(c)]

Maximum allowable working pressure for Ellipsoidal Head, MAWP =

barg

MAWP =

2 S E nt

D + 0.2 nt

Check If MAWP ≥ P

Check

Limitations: tf/L ≥ 0.002

tf/L ≥ 0.002

Inside Volume =

m³

V =

(

π Di³

π Di² SK

)

/ 10⁹

Weight =

W =

((

π (Do³-Di³)

π (Do²-Di²) SK

)

/ 10⁹) ρm

Note:

(12)

As per UG-32(c) An acceptable approximation of a 2:1 ellipsoidal head is one with a knuckle radius of 0.17D and a spherical radius of 0.90D.

RESULT

Design Conditions

Design Pressure, Pd =

barg

Design Temperature, Td =

°C

Material

Head Material

Dimensions

Outside Diameter, Do =

Nominal wall thickness before forming, tn =

Thickness after forming, tf =

Inner Diameter, Di =

Inside spherical or crown radius, L =

Inside knuckle radius, r =

For Ellipsoidal head 2:1 h =

Maximum allowable working pressure, MAWP =

barg

Inside Volume =

m³

Weight =

Discussion and References

Information about Wall Thickness Calculation of Ellipsoidal Head 2:1 Under Internal Pressure

ASME Section VIII Div 1 UG-32(c)

Standards, Paragraph & Appendix

ASME BPVC.VIII.1 Rules for Construction of Pressure Vessels

ASME BPVC SEC II-D Material Properties

ASME Section VIII Div 1 UG-32 Formed Heads, and Sections, Pressure on Concave Side

ASME Section VIII Div 1 Table UG-37 Value of Spherical Radius Factor K1

Ellipsoidal Head with ts/L ≥ 0.002

Minimum required thickness [ASME VIII.1 UG-32(c)]

t =

P D

2 S E - 0.2 P

Internal design pressure [ASME VIII.1 UG-32(c)]

P =

2 S E t

D + 0.2 t

Where:

P: Design Pressure, in bar (psig)

D: Inner Diameter (in a corroded condition), in mm (inches)

L = K1D for ellipsoidal heads in which K1 is obtained from Table UG-37.

S: Allowable Stress, in Mpa (psi)

E: Welding Efficiency

t: Minimum required thickness of head after forming, in mm (inches) (*)

ts: Minimum specified thickness of head after forming, en mm (in.) ts shall be ≥ t

(*) Required thickness (t) under pressure on the concave side according to UG-32

r = inside knuckle radius, in mm (inches)

Feactures

- High Availability
- Supports higher pressures than the Torispherical
- Ellipsoidal head has one-half the minor axis, h, equal to one-fourth of the inside diameter of the head skirt, D
- An acceptable approximation of a 2:1 ellipsoidal head is one with a knuckle radius of 0.17D and a spherical radius of 0.90D
- For heads with ts/L < 0.002 see Appendix. 1-4 (f)




DATA INPUT					DESIGN TEMP ᵒC	DESIGN TEMP ᵒC

MATERIAL	""
DENSITY		Kg/m³
MAX DESIGN TEMP		ᵒC
DESIGN TEMP		ᵒC
MIN DESIGN TEMP		ᵒC

BASIC ALLOWABLE STRESS, S, Mpa, AT METAL TEMPERATURE, °C
AT MAX METAL TEMPERATURE, °C		Mpa
AT METAL TEMPERATURE, °C		Mpa
AT MIN METAL TEMPERATURE, °C		Mpa
























ASME BPVC.II.D.M-2023

Table 1A Basic Allowable Stresses in Tension for Metals
Numbers in Parentheses Refer to Notes for Appendix A Tables; Specifications Are ASTM Unless Otherwise Indicated
		Specified		Basic Allowable Stress, S, Mpa, at Metal Temperature, °C [Note (1)]
		Min.			Min.
		Strength, Mpa			Temp. to
Spec. No. / Type/Grade		Tensile	Yield	Density	40	65	100	125	150	200	250	300	325	350	375	400	425	450	475	500	525	550	575	600	625	650	675	700	725	750	775	800	825	850	875	900
SA-285 Gr.A		310,0	165,0		88,9	88,9	88,9	88,9	88,9	88,9	88,9	86,3	83,8	81,4	78,8	73,4	64,0	56,1	44,5	31,7	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-285 Gr.B		345,0	185,0		98,6	98,6	98,6	98,6	98,6	98,6	98,6	96,6	94,1	90,6	85,1	76,8	66,8	57,8	44,9	30,9	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-285 Gr.C		380,0	205,0		108,0	108,0	108,0	108,0	108,0	108,0	108,0	107,0	104,0	101,0	97,8	89,1	75,4	62,6	45,5	31,6	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-36		400,0	250,0		114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	105,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-515 Gr.60		415,0	220,0		118,0	118,0	118,0	118,0	118,0	118,0	118,0	115,0	112,0	108,0	104,0	88,9	75,3	62,7	45,5	31,6	21,9	12,7	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-516 Gr.60		415,0	220,0		118,0	118,0	118,0	118,0	118,0	118,0	118,0	115,0	112,0	108,0	104,0	88,9	75,3	62,7	45,5	31,6	21,9	12,7	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-515 Gr.65		450,0	240,0		128,0	128,0	128,0	128,0	128,0	128,0	128,0	125,0	122,0	118,0	114,0	95,0	79,6	63,2	45,3	31,7	21,9	12,7	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-516 Gr.65		450,0	240,0		128,0	128,0	128,0	128,0	128,0	128,0	128,0	125,0	122,0	118,0	114,0	95,0	79,6	63,2	45,3	31,7	21,9	12,7	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-515 Gr.70		485,0	260,0		138,0	138,0	138,0	138,0	138,0	138,0	138,0	136,0	132,0	128,0	123,0	101,0	83,8	6Z1	51,0	33,6	21,3	12,9	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-516 Gr.70		485,0	260,0		138,0	138,0	138,0	138,0	138,0	138,0	138,0	136,0	132,0	128,0	123,0	101,0	83,8	67,1	51,0	33,6	21,3	12,9	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.1 (3)	(t≤65)	485,0	345,0		138,0	138,0	138,0	137,0	136,0	134,0	134,0	134,0	134,0	133,0	125,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.1 (4)	(65 < t ≤ 100)	450,0	310,0		128,0	128,0	128,0	128,0	128,0	128,0	128,0	128,0	128,0	127,0	114,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.2 (3)	(t≤65)	550,0	415,0		158,0	158,0	158,0	157,0	156,0	154,0	154,0	154,0	154,0	151,0	132,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.2 (4)	(65 < t ≤ 100)	515,0	380,0		148,0	148,0	147,0	147,0	145,0	144,0	144,0	144,0	144,0	143,0	134,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.2 (5)	(100 < t ≤ 150)	485,0	315,0		138,0	138,0	138,0	137,0	136,0	134,0	134,0	134,0	134,0	133,0	125,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.3 (3)	(t≤65)	550,0	380,0		158,0	158,0	158,0	157,0	156,0	154,0	154,0	154,0	154,0	151,0	132,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.3 (4)	(65 < t ≤ 100)	515,0	345,0		148,0	148,0	147,0	147,0	145,0	144,0	144,0	144,0	144,0	142,0	123,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-537 Cl.3 (5)	(100 < t ≤ 150)	485,0	275,0		138,0	138,0	138,0	137,0	136,0	135,0	131,0	126,0	123,0	121,0	118,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-738 Gr. A		515,0	310,0		148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	146,0	132,0	…	…
SA-738 Gr. B		585,0	415,0		168,0	168,0	168,0	168,0	168,0	168,0	168,0	167,0	165,0	163,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-738 Gr. C (3)	(t≤65)	550,0	415,0		158,0	158,0	158,0	157,0	156,0	154,0	154,0	154,0	154,0	151,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-738 Gr. C (4)	(65 < t ≤ 100)	515,0	380,0		148,0	148,0	147,0	147,0	145,0	144,0	144,0	144,0	144,0	143,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-738 Gr. C (5)	(100 < t ≤ 150)	485,0	315,0		138,0	138,0	138,0	137,0	136,0	134,0	134,0	134,0	134,0	133,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-204 Gr.A		450,0	255,0		128,0	128,0	128,0	128,0	128,0	128,0	128,0	128,0	128,0	128,0	128,0	128,0	127,0	124,0	105,0	68,1	43,1	32,1	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-204 Gr.B		485,0	275,0		138,0	138,0	138,0	138,0	138,0	138,0	138,0	138,0	138,0	138,0	138,0	138,0	137,0	134,0	107,0	68,1	43,1	23,1	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-204 Gr.C		515,0	295,0		148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	144,0	109,0	67,2	43,3	23,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-302 Gr. A		515,0	310,0		148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	142,0	107,0	68,1	43,1	23,1	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-302 Gr. B		550,0	345,0		158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	143,0	106,0	68,4	43,0	23,1	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-302 Gr. C		550,0	345,0		158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	143,0	106,0	68,4	43,0	23,1	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-302 Gr. D		550,0	345,0		158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	158,0	143,0	106,0	68,4	43,0	23,1	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-353 (6)		690,0	515,0		197,0	197,0	182,0	178,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-353 (7)		690,0	515,0		187,0	187,0	173,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.5 Cl.1		415,0	205,0		118,0	118,0	118,0	116,0	114,0	114,0	113,0	112,0	111,0	109,0	107,0	104,0	100,0	96,1	81,4	61,7	46,4	34,7	25,8	18,0	11,5	6,7	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.5 Cl.2		515,0	310,0		148,0	148,0	147,0	146,0	143,0	142,0	142,0	140,0	139,0	137,0	134,0	130,0	126,0	104,0	80,5	62,0	46,3	34,8	25,8	18,0	11,5	6,7	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.11 Cl.1		415,0	240,0		118,0	118,0	118,0	118,0	118,0	118,0	118,0	118,0	118,0	118,0	118,0	118,0	116,0	114,0	101,0	74,7	51,7	36,5	25,2	17,6	12,4	8,1	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.11 Cl.2		515,0	310,0		148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	148,0	143,0	107,0	72,9	52,3	36,3	25,2	17,6	12,4	8,1	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.12 Cl.1		380,0	230,0		108,0	107,0	106,0	105,0	104,0	104,0	104,0	104,0	104,0	104,0	104,0	104,0	104,0	104,0	102,0	88,8	61,7	40,3	26,4	17,3	11,7	7,4	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.12 Cl.2		450,0	275,0		128,0	128,0	125,0	124,0	123,0	123,0	123,0	123,0	123,0	123,0	123,0	123,0	123,0	123,0	123,0	94,4	60,2	40,8	26,3	17,3	11,7	7,4	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.21 Cl.1		415,0	205,0		118,0	118,0	118,0	116,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	113,0	90,5	68,2	54,1	43,5	34,4	25,3	17,4	10,0	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.21 Cl.2		515,0	310,0		148,0	148,0	147,0	146,0	144,0	142,0	141,0	141,0	140,0	139,0	138,0	136,0	133,0	127,0	100,0	72,8	54,9	40,7	29,4	20,4	15,7	8,6	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.22 Cl.1		415,0	205,0		118,0	118,0	118,0	116,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	114,0	100,0	80,9	64,0	47,7	34,5	23,5	15,5	9,4	…	…	…	…	…	…	…	…	…	…
SA-387 Gr.22 Cl.2		515,0	310,0		148,0	148,0	147,0	146,0	144,0	142,0	141,0	141,0	140,0	139,0	138,0	136,0	133,0	130,0	116,0	89,4	64,3	44,9	30,1	19,7	12,9	8,1	…	…	…	…	…	…	…	…	…	…
SA-553 Gr. I (6)		690,0	585,0		197,0	197,0	182,0	178,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-553 Gr. I (7)		690,0	585,0		187,0	187,0	173,0	169,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-553 Gr. II (6)		690,0	585,0		197,0	197,0	182,0	178,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-553 Gr. II (7)		690,0	585,0		187,0	187,0	173,0	169,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-553 Gr. III (6)		690,0	585,0		197,0	197,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-553 Gr. III (7)		690,0	585,0		187,0	187,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-645 Gr. A		655,0	450,0		187,0	187,0	186,0	183,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-240 410		450,0	205,0		128,0	128,0	126,0	125,0	123,0	120,0	119,0	117,0	115,0	114,0	111,0	108,0	104,0	100,0	89,9	69,2	50,9	37,8	26,4	18,0	11,6	6,7	…	…	…	…	…	…	…	…	…	…
SA-240 410S		415,0	205,0		118,0	118,0	118,0	117,0	116,0	114,0	113,0	111,0	109,0	107,0	104,0	101,0	97,5	93,0	88,3	69,7	50,7	37,9	26,4	18,0	11,6	6,7	…	…	…	…	…	…	…	…	…	…
SA-240 430		450,0	205,0		128,0	128,0	126,0	125,0	123,0	120,0	119,0	117,0	115,0	114,0	111,0	108,0	104,0	101,0	87,8	70,4	53,0	38,1	27,5	20,5	15,9	12,2	…	…	…	…	…	…	…	…	…	…
SA-240 304 (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	126,0	113,0	107,0	103,0	95,7	89,9	85,9	84,1	82,2	80,5	79,2	77,3	76,0	74,8	73,6	72,4	70,8	68,9	65,4	51,4	41,7	32,9	26,5	21,3	17,2	13,9	11,1	8,7	…	…	…
SA-240 304 (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	137,0	134,0	130,0	126,0	122,0	116,0	114,0	111,0	109,0	107,0	105,0	103,0	101,0	99,3	98,0	93,3	79,6	65,4	51,4	41,7	32,9	26,5	21,3	17,2	13,9	11,1	8,7	…	…	…
SA-240 304L (1)	(S ≤ 66.66% of σy @ temp.)	485,0	170,0		115,0	105,0	97,0	92,3	88,1	81,2	76,0	72,3	70,9	69,7	68,6	67,6	66,7	65,7	64,6	63,4	60,2	49,5	40,4	32,9	26,7	22,0	…	…	…	…	…	…	…	…	…	…
SA-240 304L (2)	(S > 66.66% but < 90% of σy @ temp.)	485,0	170,0		115,0	115,0	115,0	115,0	115,0	110,0	103,0	97,7	95,7	94,1	92,6	91,3	90,0	88,7	86,6	72,5	60,2	49,5	40,4	32,9	26,7	22,0	…	…	…	…	…	…	…	…	…	…
SA-240 304H (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	126,0	113,0	107,0	103,0	95,7	89,9	85,9	84,1	82,2	80,5	79,2	77,3	76,0	74,8	73,6	72,4	70,8	68,9	65,4	51,4	41,7	32,9	26,5	21,3	17,2	13,9	11,1	8,7	…	…	…
SA-240 304H (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	137,0	134,0	130,0	126,0	122,0	116,0	114,0	111,0	109,0	107,0	105,0	103,0	101,0	99,3	98,0	93,3	79,6	65,4	51,4	41,7	32,9	26,5	21,3	17,2	13,9	11,1	8,7	…	…	…
SA-240 316 (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	128,0	118,0	112,0	107,0	99,2	92,8	88,1	86,1	84,1	82,9	82,0	81,4	80,6	79,8	79,2	78,7	77,8	77,1	75,0	65,5	50,4	38,6	29,6	23,0	1Z7	13,4	10,4	8,1	…	…	…
SA-240 316 (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	138,0	138,0	134,0	126,0	119,0	116,0	114,0	112,0	111,0	110,0	108,0	108,0	107,0	106,0	105,0	99,8	80,3	65,5	50,4	38,6	29,6	23,0	17,7	13,4	10,4	8,1	…	…	…
SA-240 316L (1)	(S ≤ 66.66% of σy @ temp.)	485,0	170,0		115,0	106,0	96,3	91,3	87,4	81,2	76,0	72,5	71,2	70,0	68,8	67,5	66,3	65,0	63,8	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-240 316L (2)	(S > 66.66% but < 90% of σy @ temp.)	485,0	170,0		115,0	115,0	115,0	115,0	115,0	109,0	103,0	98,0	95,7	94,1	92,8	90,9	89,0	87,8	86,6	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-240 316H (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	128,0	118,0	112,0	107,0	99,2	92,8	88,1	86,1	84,1	82,9	82,0	81,4	80,6	79,8	79,2	78,7	77,8	77,1	75,0	65,5	50,4	38,6	29,6	23,0	17,7	13,4	10,4	8,1	…	…	…
SA-240 316H (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	138,0	138,0	134,0	126,0	119,0	116,0	114,0	112,0	111,0	110,0	108,0	108,0	107,0	106,0	105,0	99,8	80,3	65,5	50,4	38,6	29,6	23,0	17,7	13,4	10,4	8,1	…	…	…
SA-240 309S (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	129,0	120,0	115,0	111,0	105,0	100,0	96,7	95,4	94,1	92,9	91,6	90,4	89,2	87,9	86,7	78,5	59,2	44,2	31,8	23,7	16,9	10,7	6,1	3,8	3,0	2,4	1,8	1,2	…	…	…
SA-240 309S (1)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	138,0	138,0	138,0	135,0	131,0	129,0	127,0	125,0	124,0	122,0	121,0	119,0	115,0	89,4	59,2	44,2	31,8	23,7	16,9	10,7	6,1	3,8	3,0	2,4	1,8	1,2	…	…	…
SA-240 309H (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	129,0	119,0	114,0	111,0	105,0	100,0	96,7	95,4	94,1	92,9	91,6	90,4	89,2	87,9	86,7	85,4	78,9	65,2	48,6	36,3	27,3	21,1	15,9	12,5	9,9	7,8	6,1	4,6	…	…	…
SA-240 309H (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	138,0	138,0	138,0	135,0	131,0	129,0	127,0	125,0	124,0	122,0	121,0	119,0	117,0	107,0	83,8	65,2	48,6	36,3	27,3	21,1	15,9	12,5	9,9	7,8	6,1	4,6	…	…	…
SA-240 310S (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	129,0	120,0	115,0	111,0	105,0	100,0	95,4	94,0	92,8	91,5	90,3	89,0	87,8	86,5	85,3	77,8	59,2	44,2	31,8	23,7	16,9	10,7	6,1	3,8	3,0	2,4	1,8	1,2	…	…	…
SA-240 310S (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	138,0	138,0	138,0	135,0	129,0	127,0	125,0	123,0	122,0	120,0	119,0	117,0	112,0	87,2	59,2	44,2	31,8	23,7	16,9	10,7	6,1	3,8	3,0	2,4	1,8	1,2	…	…	…
SA-240 310H (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	129,0	120,0	115,0	111,0	105,0	99,5	95,4	94,0	92,8	91,5	90,3	89,0	87,8	86,5	85,3	84,0	79,8	64,7	48,6	36,2	27,3	21,1	15,9	12,5	9,9	7,6	6,0	4,7	…	…	…
SA-240 310H (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	138,0	138,0	137,0	134,0	129,0	127,0	125,0	123,0	122,0	120,0	119,0	117,0	116,0	104,0	84,7	64,7	48,6	36,2	27,3	21,1	15,9	12,5	9,9	7,6	6,0	4,7	…	…	…
SA-240 317 (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	128,0	118,0	112,0	107,0	99,2	92,8	88,1	86,1	84,1	82,9	82,0	81,4	80,6	79,8	79,2	78,7	77,8	77,1	75,0	65,5	50,4	38,6	29,6	23,0	177,0	13,4	10,4	8,1	…	…	…
SA-240 317 (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	138,0	138,0	134,0	126,0	119,0	116,0	114,0	112,0	111,0	110,0	108,0	108,0	107,0	106,0	105,0	99,8	80,3	65,5	50,4	38,6	29,6	23,0	17,7	13,4	10,4	8,1	…	…	…
SA-240 317L (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	127,0	115,0	109,0	105,0	97,1	91,2	87,3	85,4	83,8	82,5	80,6	79,4	78,1	76,9	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-240 317L (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	137,0	135,0	131,0	123,0	118,0	116,0	113,0	111,0	109,0	107,0	105,0	103,0	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…	…
SA-240 321 (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	130,0	123,0	118,0	114,0	106,0	99,7	94,5	92,3	90,7	89,4	87,5	86,9	85,7	85,0	83,9	83,0	77,6	59,2	44,8	32,9	24,5	18,3	12,6	8,4	6,2	4,4	2,8	1,6	…	…	…
SA-240 321 (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	135,0	132,0	129,0	129,0	127,0	125,0	123,0	121,0	119,0	117,0	115,0	114,0	113,0	111,0	87,4	57,5	44,4	32,9	24,5	18,3	12,6	8,4	6,2	4,4	2,8	1,6	…	…	…
SA-240 321H (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	131,0	123,0	118,0	114,0	106,0	99,7	94,5	92,3	90,7	89,4	87,5	86,9	85,7	85,0	83,9	83,0	82,4	77,7	58,7	46,0	36,9	28,7	22,9	18,4	14,4	11,5	9,2	6,6	…	…	…
SA-240 321H (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	138,0	135,0	132,0	129,0	129,0	127,0	125,0	123,0	121,0	119,0	117,0	115,0	114,0	113,0	112,0	103,0	77,7	58,7	46,0	36,9	28,7	22,9	18,4	14,4	11,5	9,2	6,6	…	…	…
SA-240 347 (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	132,0	126,0	122,0	118,0	111,0	105,0	99,8	97,9	96,1	95,0	94,4	93,8	93,2	92,5	92,4	92,4	90,3	77,2	57,7	39,9	30,0	23,2	16,3	11,2	8,9	7,1	5,8	5,3	…	…	…
SA-240 347 (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	137,0	134,0	129,0	123,0	119,0	117,0	116,0	116,0	116,0	116,0	116,0	116,0	115,0	115,0	113,0	99,8	77,2	57,7	39,9	30,0	23,2	16,3	11,2	8,9	7,1	5,8	5,3	…	…	…
SA-240 347H (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	132,0	126,0	122,0	118,0	111,0	105,0	99,8	97,9	96,1	95,0	94,4	93,8	93,2	92,5	92,4	92,4	92,4	92,2	89,1	69,3	53,9	41,4	31,8	23,9	18,8	14,6	10,8	7,8	…	…	…
SA-240 347H (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	137,0	134,0	129,0	123,0	119,0	117,0	116,0	116,0	116,0	116,0	116,0	116,0	115,0	115,0	114,0	113,0	109,0	92,3	69,3	53,9	41,4	31,8	23,9	18,8	14,6	10,8	7,8	…	…	…
SA-240 348 (1)	(S ≤ 66.66% of σy @ temp.)	515,0	205,0		138,0	132,0	126,0	122,0	118,0	111,0	105,0	99,8	97,9	96,1	95,0	94,4	93,8	93,2	92,5	92,4	92,4	90,3	77,2	57,7	39,9	30,0	23,2	16,3	11,2	8,9	7,1	5,8	5,3	…	…	…
SA-240 348 (2)	(S > 66.66% but < 90% of σy @ temp.)	515,0	205,0		138,0	138,0	137,0	134,0	129,0	123,0	119,0	117,0	116,0	116,0	116,0	116,0	116,0	116,0	115,0	115,0	113,0	99,8	77,2	57,7	39,9	30,0	23,2	16,3	11,2	8,9	7,1	5,8	5,3	…	…	…

Temp ᵒC	SA-285 Gr.A	SA-285 Gr.B	SA-285 Gr.C	SA-36	SA-515 Gr.60	SA-516 Gr.60	SA-515 Gr.65	SA-516 Gr.65	SA-515 Gr.70	SA-516 Gr.70	SA-537 Cl.1 (3)	SA-537 Cl.1 (4)	SA-537 Cl.2 (3)	SA-537 Cl.2 (4)	SA-537 Cl.2 (5)	SA-537 Cl.3 (3)	SA-537 Cl.3 (4)	SA-537 Cl.3 (5)	SA-738 Gr. A	SA-738 Gr. B	SA-738 Gr. C (3)	SA-738 Gr. C (4)	SA-738 Gr. C (5)	SA-204 Gr.A	SA-204 Gr.B	SA-204 Gr.C	SA-302 Gr. A	SA-302 Gr. B	SA-302 Gr. C	SA-302 Gr. D	SA-353 (6)	SA-353 (7)	SA-387 Gr.5 Cl.1	SA-387 Gr.5 Cl.2	SA-387 Gr.11 Cl.1	SA-387 Gr.11 Cl.2	SA-387 Gr.12 Cl.1	SA-387 Gr.12 Cl.2	SA-387 Gr.21 Cl.1	SA-387 Gr.21 Cl.2	SA-387 Gr.22 Cl.1	SA-387 Gr.22 Cl.2	SA-553 Gr. I (6)	SA-553 Gr. I (7)	SA-553 Gr. II (6)	SA-553 Gr. II (7)	SA-553 Gr. III (6)	SA-553 Gr. III (7)	SA-645 Gr. A	SA-240 410	SA-240 410S	SA-240 430	SA-240 304 (1)	SA-240 304 (2)	SA-240 304L (2)	SA-240 304L (2)	SA-240 304H (1)	SA-240 304H (2)	SA-240 316 (1)	SA-240 316 (2)	SA-240 316L (1)	SA-240 316L (2)	SA-240 316H (1)	SA-240 316H (2)	SA-240 309S (1)	SA-240 309S (2)	SA-240 309H (1)	SA-240 309H (2)	SA-240 310S (1)	SA-240 310S (2)	SA-240 310H (1)	SA-240 310H (2)	SA-240 317 (1)	SA-240 317 (2)	SA-240 317L (1)	SA-240 317L (2)	SA-240 321 (1)	SA-240 321 (2)	SA-240 321H (1)	SA-240 321H (2)	SA-240 347 (1)	SA-240 347 (2)	SA-240 347H (1)	SA-240 347H (2)	SA-240 348 (1)	SA-240 348 (2)

































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Table UG-37

D/2h

For Ellipsoidal head SI

Max D/2h

D/2h

Min D/2h

Max k1

Min k1