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IS 4432 21Cr4Mo2 vs IS 1570 (Part 7) 12Cr2Mo5V2H

Minimal Match — 43.6% match based on chemical composition and mechanical property overlap.

IS 4432 21Cr4Mo2 (IS 4432:1988) and IS 1570 (Part 7) 12Cr2Mo5V2H (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Alloy Steel category. IS 4432 21Cr4Mo2 is typically used for forgings and fabrication of case-hardened machine or automobile parts, while IS 1570 (Part 7) 12Cr2Mo5V2H is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature. IS 4432 21Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 7) 12Cr2Mo5V2H is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 4432 21Cr4Mo2 vs IS 1570 (Part 7) 12Cr2Mo5V2H is a 65.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 43.6%.

Frequently Compared With IS 4432 21Cr4Mo2:
NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
65.4%
MECHANICAL MATCH
0%
OVERALL
43.6%
Specifications
Property IS 4432 21Cr4Mo2 IS 1570 (Part 7) 12Cr2Mo5V2H
Standard IS 4432:1988 IS 1570 (Part 7):1992
Category Alloy Steel Alloy Steel
C (%) <=0.26 0.10-0.18
Si (%) 0.10-0.35 0.10-0.35
Mn (%) 0.60-0.90 0.40-0.70
Cr (%) 0.90-1.20 0.30-0.60
Mo (%) 0.15-0.30 0.50-0.70
S (%) <=0.035 Not specified
P (%) <=0.035 <=0.040
V (%) Not specified 0.22-0.32
Al (metallic) (%) Not specified <=0.02
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 4432 21Cr4Mo2 IS 1570 (Part 7) 12Cr2Mo5V2H
Core Tensile Strength 1100-1400 MPa (16 mm) / 1000-1350 MPa (30 mm) / 950-1250 MPa (63 mm) Not specified
Core Yield Strength >=750 MPa (16 mm) / >=700 MPa (30 mm) / >=650 MPa (63 mm) Not specified
Core Elongation >=8% (16 mm) / >=9% (30 mm) / >=10% (63 mm) Not specified
Core Reduction of Area >=35% (16 mm) / >=40% (30 mm) / >=40% (63 mm) Not specified
Hardness, annealed (A) <=217 HB Not specified
Tensile Strength Not specified 460-610 MPa
Yield Strength Not specified >=275 MPa (0.2 % proof stress)
Elongation Not specified >=15%
Condition Not specified Pipes, N+T, thickness - (first row of Table 3)
Typical Applications
IS 4432 21Cr4Mo2
Forgings and fabrication of case-hardened machine or automobile parts
IS 1570 (Part 7) 12Cr2Mo5V2H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can IS 4432 21Cr4Mo2 Be Substituted With IS 1570 (Part 7) 12Cr2Mo5V2H?
IS 4432 21Cr4Mo2 and IS 1570 (Part 7) 12Cr2Mo5V2H 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.
On M-EX Right Now
IS 4432 21Cr4Mo2
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IS 1570 (Part 7) 12Cr2Mo5V2H
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Frequently Asked Questions
What is the difference between IS 4432 21Cr4Mo2 and IS 1570 (Part 7) 12Cr2Mo5V2H?
IS 4432 21Cr4Mo2 specifies S which is not specified for IS 1570 (Part 7) 12Cr2Mo5V2H. IS 1570 (Part 7) 12Cr2Mo5V2H specifies V, Al (metallic) which are not specified for IS 4432 21Cr4Mo2.
Can IS 4432 21Cr4Mo2 be substituted with IS 1570 (Part 7) 12Cr2Mo5V2H?
IS 4432 21Cr4Mo2 and IS 1570 (Part 7) 12Cr2Mo5V2H 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.