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ASTM A959 660 vs IS 1570 (Part 7) 12Cr12MoH

Minimal Match — 42.1% match based on chemical composition and mechanical property overlap.

ASTM A959 660 (ASTM A959:2011) and IS 1570 (Part 7) 12Cr12MoH (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 660 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while IS 1570 (Part 7) 12Cr12MoH is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature. ASTM A959 660 is defined under ASTM International, originating from United States, while IS 1570 (Part 7) 12Cr12MoH is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, ASTM A959 660 vs IS 1570 (Part 7) 12Cr12MoH is a 42.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 42.1%.

Frequently Compared With ASTM A959 660:
ASTM A959 .- EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr13H GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
42.1%
MECHANICAL MATCH
No shared data
OVERALL
42.1%
Specifications
Property ASTM A959 660 IS 1570 (Part 7) 12Cr12MoH
Standard ASTM A959:2011 IS 1570 (Part 7):1992
Category Stainless Steel Stainless Steel
Al (%) <=0.35 Not specified
B (%) 0.001-0.010 Not specified
C (%) <=0.08 0.08-0.16
Cr (%) 13.5-16.0 11.5-13.00
Mn (%) <=2.00 0.40-1.00
Mo (%) 1.00-1.50 0.40-0.80
Ni (%) 24.0-27.0 <=1.0
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.035
Si (%) <=1.00 <=0.60
Ti (%) 1.90-2.35 Not specified
V (%) 0.10-0.50 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A959 660 IS 1570 (Part 7) 12Cr12MoH
Tensile Strength Not specified 680-880 MPa
Yield Strength Not specified >=490 MPa (0.2 % proof stress)
Elongation Not specified >=20%
Condition Not specified Bars, forgings, Q+T, thickness up to 75 (first row of Table 3)
Typical Applications
ASTM A959 660
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
IS 1570 (Part 7) 12Cr12MoH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can ASTM A959 660 Be Substituted With IS 1570 (Part 7) 12Cr12MoH?
ASTM A959 660 and IS 1570 (Part 7) 12Cr12MoH share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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ASTM A959 660
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IS 1570 (Part 7) 12Cr12MoH
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Frequently Asked Questions
What is the difference between ASTM A959 660 and IS 1570 (Part 7) 12Cr12MoH?
ASTM A959 660 specifies Al, B, Ti, V which are not specified for IS 1570 (Part 7) 12Cr12MoH.
Can ASTM A959 660 be substituted with IS 1570 (Part 7) 12Cr12MoH?
ASTM A959 660 and IS 1570 (Part 7) 12Cr12MoH share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.