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IS 11169 (Part 1) 18Cr4Mo2S3 vs BS 970 (Part 1) 708H20

Close Alternative — 84% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 18Cr4Mo2S3 (IS 11169 (Part 1):2022) and BS 970 (Part 1) 708H20 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. IS 11169 (Part 1) 18Cr4Mo2S3 is typically used for cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex b), while BS 970 (Part 1) 708H20 is commonly used for case hardening steel supplied to specified hardenability limits (end quench test, table 10).. IS 11169 (Part 1) 18Cr4Mo2S3 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 708H20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 11169 (Part 1) 18Cr4Mo2S3 vs BS 970 (Part 1) 708H20 is a 84% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 84%.

Frequently Compared With IS 11169 (Part 1) 18Cr4Mo2S3:
IS 11169 (Part 1) 12Cr4Mo2 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
84%
MECHANICAL MATCH
No shared data
OVERALL
84%
Specifications
Property IS 11169 (Part 1) 18Cr4Mo2S3 BS 970 (Part 1) 708H20
Standard IS 11169 (Part 1):2022 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
C (%) 0.15-0.21 0.17-0.23
Cr (%) 0.90-1.20 0.85-1.15
Cu (%) <=0.25 Not specified
Mn (%) 0.60-0.90 0.60-0.90
Mo (%) 0.15-0.25 0.15-0.25
P (%) <=0.025 <=0.035
S (%) 0.020-0.040 <=0.040
Si (%) <=0.30 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 IS 11169 (Part 1) 18Cr4Mo2S3 BS 970 (Part 1) 708H20
Hardness, ferrite-pearlite (+FP) 140-187 HB Not specified
Tensile Strength, annealed (+AC) <=550 MPa (over 5 to 40 mm) Not specified
Typical Applications
IS 11169 (Part 1) 18Cr4Mo2S3
Cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex B)
BS 970 (Part 1) 708H20
Case hardening steel supplied to specified hardenability limits (end quench test, Table 10).
Key Differences
Can IS 11169 (Part 1) 18Cr4Mo2S3 Be Substituted With BS 970 (Part 1) 708H20?
IS 11169 (Part 1) 18Cr4Mo2S3 and BS 970 (Part 1) 708H20 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
On M-EX Right Now
IS 11169 (Part 1) 18Cr4Mo2S3
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BS 970 (Part 1) 708H20
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 18Cr4Mo2S3 and BS 970 (Part 1) 708H20?
IS 11169 (Part 1) 18Cr4Mo2S3 specifies Cu, Si which are not specified for BS 970 (Part 1) 708H20.
Can IS 11169 (Part 1) 18Cr4Mo2S3 be substituted with BS 970 (Part 1) 708H20?
IS 11169 (Part 1) 18Cr4Mo2S3 and BS 970 (Part 1) 708H20 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.