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IS 1570 (Part 4) 21Cr4Mo2 vs NF A35-565 100C6

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

IS 1570 (Part 4) 21Cr4Mo2 (IS 1570 (Part 4):1988) and NF A35-565 100C6 are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 21Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while NF A35-565 100C6 is defined under Association Francaise de Normalisation (NF), originating from France.

As per chemical composition, IS 1570 (Part 4) 21Cr4Mo2 vs NF A35-565 100C6 is a 64.7% match. As per mechanical properties, the match is 45.2%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 1570 (Part 4) 21Cr4Mo2:
IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 12Cr4Mo5H IS 1570 (Part 7) 10Mo6H IS 1570 (Part 7) 12Cr2Mo5V2H IS 11169 (Part 1) 12Cr4Mo2 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 12Cr9Mo10H GOST 4543 12HN3A IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Mo6 UNI 11234 100Cr6
Match Breakdown
CHEMISTRY MATCH
64.7%
MECHANICAL MATCH
45.2%
OVERALL
35%
Specifications
Property IS 1570 (Part 4) 21Cr4Mo2 NF A35-565 100C6
Standard IS 1570 (Part 4):1988 NF A35-565
Category Alloy Steel Alloy Steel
C (%) <=0.26 0.95-1.05
Si (%) 0.10-0.35 0.15-0.35
Mn (%) 0.60-0.90 0.25-0.45
Cr (%) 0.90-1.20 1.35-1.65
Mo (%) 0.15-0.30 Not specified
S (%) Not specified <=0.025
P (%) Not specified <=0.027
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) 21Cr4Mo2 NF A35-565 100C6
Tensile Strength 790-990 MPa 850-1100 MPa
Yield Strength >=610 MPa Not specified
Condition Sheet and strip, hardened and tempered or cold rolled and tempered Not specified
Hardness Not specified 60-66 HRC
Typical Applications
IS 1570 (Part 4) 21Cr4Mo2
Not documented
NF A35-565 100C6
ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts
Key Differences
Can IS 1570 (Part 4) 21Cr4Mo2 Be Substituted With NF A35-565 100C6?
IS 1570 (Part 4) 21Cr4Mo2 and NF A35-565 100C6 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.
Forms & Sizes Available on M-EX
IS 1570 (Part 4) 21Cr4Mo2
No active listings currently.
NF A35-565 100C6
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6700–6700 mm (263.78–263.78 in)
On M-EX Right Now
IS 1570 (Part 4) 21Cr4Mo2
0 active listings and RFQs →
NF A35-565 100C6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 21Cr4Mo2 and NF A35-565 100C6?
IS 1570 (Part 4) 21Cr4Mo2 specifies Mo which is not specified for NF A35-565 100C6. NF A35-565 100C6 specifies S, P which are not specified for IS 1570 (Part 4) 21Cr4Mo2.
Can IS 1570 (Part 4) 21Cr4Mo2 be substituted with NF A35-565 100C6?
IS 1570 (Part 4) 21Cr4Mo2 and NF A35-565 100C6 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.