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IS 1570 (Part 4) 36Si7 vs IS 1570 (Part 7) 12Cr4Mo5H

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

IS 1570 (Part 4) 36Si7 (IS 1570 (Part 4):1988) and IS 1570 (Part 7) 12Cr4Mo5H (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 36Si7 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 7) 12Cr4Mo5H is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 1570 (Part 4) 36Si7 vs IS 1570 (Part 7) 12Cr4Mo5H is a 62.3% 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 IS 1570 (Part 4) 36Si7:
UNI 11234 100Cr6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 12Cr2Mo5V2H GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6
Match Breakdown
CHEMISTRY MATCH
62.3%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property IS 1570 (Part 4) 36Si7 IS 1570 (Part 7) 12Cr4Mo5H
Standard IS 1570 (Part 4):1988 IS 1570 (Part 7):1992
Category Alloy Steel Alloy Steel
C (%) 0.33-0.40 0.10-0.18
Si (%) 1.50-2.00 0.10-0.35
Mn (%) 0.80-1.00 0.40-0.70
P (%) Not specified <=0.040
Cr (%) Not specified 0.70-1.10
Mo (%) Not specified 0.45-0.65
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 1570 (Part 4) 36Si7 IS 1570 (Part 7) 12Cr4Mo5H
Tensile Strength Not specified 440-590 MPa
Yield Strength Not specified >=275 MPa (0.2 % proof stress)
Elongation Not specified >=22%
Condition Not specified Pipes, N+T, thickness - (first row of Table 3)
Typical Applications
IS 1570 (Part 4) 36Si7
Not documented
IS 1570 (Part 7) 12Cr4Mo5H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can IS 1570 (Part 4) 36Si7 Be Substituted With IS 1570 (Part 7) 12Cr4Mo5H?
IS 1570 (Part 4) 36Si7 and IS 1570 (Part 7) 12Cr4Mo5H 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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IS 1570 (Part 4) 36Si7
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IS 1570 (Part 7) 12Cr4Mo5H
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Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 36Si7 and IS 1570 (Part 7) 12Cr4Mo5H?
IS 1570 (Part 7) 12Cr4Mo5H specifies P, Cr, Mo, Al (metallic) which are not specified for IS 1570 (Part 4) 36Si7.
Can IS 1570 (Part 4) 36Si7 be substituted with IS 1570 (Part 7) 12Cr4Mo5H?
IS 1570 (Part 4) 36Si7 and IS 1570 (Part 7) 12Cr4Mo5H 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.