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BS 970 (Part 3) 826M31 vs IS 5517 40Ni10Cr3Mo6

Close Alternative — 84.8% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 826M31 (BS 970 (Part 3):1991) and IS 5517 40Ni10Cr3Mo6 (IS 5517:1993) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 3) 826M31 is defined under British Standards (BS), originating from United Kingdom, while IS 5517 40Ni10Cr3Mo6 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 3) 826M31 vs IS 5517 40Ni10Cr3Mo6 is a 84.8% 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 84.8%.

Frequently Compared With BS 970 (Part 3) 826M31:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Mo6H UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5
Match Breakdown
CHEMISTRY MATCH
84.8%
MECHANICAL MATCH
No shared data
OVERALL
84.8%
Specifications
Property BS 970 (Part 3) 826M31 IS 5517 40Ni10Cr3Mo6
Standard BS 970 (Part 3):1991 IS 5517:1993
Category Alloy Steel Alloy Steel
C (%) 0.27-0.35 0.36-0.44
Si (%) 0.10-0.40 0.10-0.35
Mn (%) 0.45-0.70 0.40-0.70
P (%) <=0.035 <=0.035
S (%) <=0.040 <=0.035
Cr (%) 0.50-0.80 0.50-0.80
Mo (%) 0.45-0.65 0.40-0.70
Ni (%) 2.30-2.80 2.25-2.75
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 3) 826M31 IS 5517 40Ni10Cr3Mo6
Tensile Strength Not specified 1000-1150 MPa
Yield Strength (0.2% proof) Not specified 800 MPa min
Elongation Not specified >=12%
Izod Impact Not specified 48 J min
Hardness (annealed) Not specified <=269 HB
Condition Not specified Hardened and tempered, ruling section up to 150 mm
Typical Applications
BS 970 (Part 3) 826M31
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
IS 5517 40Ni10Cr3Mo6
Not documented
Can BS 970 (Part 3) 826M31 Be Substituted With IS 5517 40Ni10Cr3Mo6?
BS 970 (Part 3) 826M31 and IS 5517 40Ni10Cr3Mo6 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.
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BS 970 (Part 3) 826M31
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IS 5517 40Ni10Cr3Mo6
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 826M31 and IS 5517 40Ni10Cr3Mo6?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 826M31 be substituted with IS 5517 40Ni10Cr3Mo6?
BS 970 (Part 3) 826M31 and IS 5517 40Ni10Cr3Mo6 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.