ASTM A789 & A790

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Stainless steel pipe

ASTM A789 & A790

2.4 ASTM A789 & A790.jpg

ASTM A789 & A790: American Society for Testing and Materials
Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes.
Application: Refineries; Nuclear Plant; Aerospace Industry; Chemical Fertilizer; Petrochemicals' Oli & Gas and etc

A789 Chemical Composition
UNS Designation	C max	Mn max	P max	S max	Si max	Ni	Cr	Mo	N	Cu
S31803	0.03	2	0.03	0.02	1	4.5-6.5	21.0-23.0	2.5-3.5	0.08-0.20	-
S31500	0.03	1.20-2.00	0.03	0.03	1.40-2.00	4.25-5.25	18.0-19.0	2.5-3.00	0.05-0.1	-
S32750	0.03	1.2	0.035	0.02	0.8	6.0-8.0	24.0-26.0	3.0-5.0	0.24-0.32	0.5max

A790 Chemical Composition
UNS Designation	C max	Mn max	P max	S max	Si max	Ni	Cr	Mo	N	Cu
S31803	0.03	2	0.03	0.02	1	4.5-6.5	21.0-23.0	2.5-3.5	0.08-0.20	-
S32205	0.03	2	0.03	0.02	1	4.5-6.5	22.0-23.0	3.0-3.5	0.14-0.20	-
S32750	0.03	1.2	0.035	0.02	0.8	6.0-8.0	24.0-26.0	3.0-5.0	0.24-0.32	0.5max

A789 Mechanical Properties
UNS Designation	Tensile Strength, min ksi [Mpa]	Yield Strength, min ksi [Mpa]	Elongation in 2 in. or 50 mm, min, %
S31803	90 [620]	65 [450]	25
S31500	92 [630]	64 [440]	30
S32750	116 [800]	80 [550]	15

A790 Mechanical Properties
UNS Designation	Tensile Strength, min ksi [Mpa]	Yield Strength, min ksi [Mpa]	Elongation in 2 in. or 50 mm, min, %
S31803	90 [620]	65 [450]	25
S32205	90 [620]	65 [450]	25
S32750	116 [800]	80 [550]	15

Available Dimension Range

OD(mm/inch)

Wall thickness (SCH)

STD

100

120

140

160

XXS

…100mm

21.3 (1/2'')

√

26.7 (3/4'')

√

33.4 (1'')

√

42.2 (1 1/4'')

√

48.3 (1 1/2'')

√

60.3 (2'')

√

73 (2 1/2'')

√

88.9 (3'')

√

101.6 (3 1/2'')

√

114.3 (4'')

√

141.3 (5'')

√

168.3 (6'')

√

219.1 (8'')

√

273 (10'')

√

323.8 (12'')

√

355.6 (14'')

√

406.4 (16'')

√

457 (18'')

√

508 (20'')

√

559 (22'')

√

610 (24'')

√

660 (26'')

√

711 (28'')

√

762 (30'')

√

813 (32'')

√

864 (34'')

√

914 (36'')

√

965.2 (38'')

√

1016 (40'')

√

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