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ASTM A959 409Cb vs IS 1570 (Part 7) 12Cr12MoH

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

ASTM A959 409Cb (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 409Cb 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 409Cb 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 409Cb vs IS 1570 (Part 7) 12Cr12MoH is a 66.4% 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 35%.

Frequently Compared With ASTM A959 409Cb:
EN 10088-1 1.4401 ASTM A959 .- GB/T 3280 06Cr19Ni10 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH EN 10088-1 1.4006 EN 10088-1 1.4301 IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H GOST 5632 08X18H10 GOST 5632 06Kh23N28
Match Breakdown
CHEMISTRY MATCH
66.4%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property ASTM A959 409Cb IS 1570 (Part 7) 12Cr12MoH
Standard ASTM A959:2011 IS 1570 (Part 7):1992
Category Stainless Steel Stainless Steel
C (%) <=0.06 0.08-0.16
Cr (%) 10.5-11.7 11.5-13.00
Mn (%) <=1.00 0.40-1.00
Ni (%) <=0.50 <=1.0
P (%) <=0.045 <=0.040
S (%) <=0.040 <=0.035
Si (%) <=1.00 <=0.60
Mo (%) Not specified 0.40-0.80
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 409Cb 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 409Cb
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 409Cb Be Substituted With IS 1570 (Part 7) 12Cr12MoH?
ASTM A959 409Cb 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 409Cb
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IS 1570 (Part 7) 12Cr12MoH
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Frequently Asked Questions
What is the difference between ASTM A959 409Cb and IS 1570 (Part 7) 12Cr12MoH?
IS 1570 (Part 7) 12Cr12MoH specifies Mo which is not specified for ASTM A959 409Cb.
Can ASTM A959 409Cb be substituted with IS 1570 (Part 7) 12Cr12MoH?
ASTM A959 409Cb 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.