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IS 4367 40Ni10Cr3Mo6 vs BS 970 (Part 3) 817M40

Close Alternative — 72% match based on chemical composition and mechanical property overlap.

IS 4367 40Ni10Cr3Mo6 (IS 4367:1991) and BS 970 (Part 3) 817M40 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. IS 4367 40Ni10Cr3Mo6 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 817M40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 4367 40Ni10Cr3Mo6 vs BS 970 (Part 3) 817M40 is a 72% 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 72%.

Frequently Compared With IS 4367 40Ni10Cr3Mo6:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 7) 12Cr2Mo5V2H IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
72%
MECHANICAL MATCH
No shared data
OVERALL
72%
Specifications
Property IS 4367 40Ni10Cr3Mo6 BS 970 (Part 3) 817M40
Standard IS 4367:1991 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.36-0.44 0.36-0.44
Si (%) 0.10-0.35 0.10-0.40
Mn (%) 0.40-0.70 0.45-0.70
Ni (%) 2.25-2.75 1.30-1.70
Cr (%) 0.50-0.80 1.00-1.40
Mo (%) 0.40-0.70 0.20-0.35
S (%) <=0.035 <=0.040
P (%) <=0.035 <=0.035
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 4367 40Ni10Cr3Mo6 BS 970 (Part 3) 817M40
Tensile Strength 1000-1150 MPa Not specified
Yield Strength 800 MPa min Not specified
Elongation >=12% Not specified
Izod Impact 48 J min Not specified
Hardness 295-341 HB Not specified
Hardness (soft annealed) <=250 HB Not specified
Condition Hardened and tempered, ruling section up to 150 mm Not specified
Typical Applications
IS 4367 40Ni10Cr3Mo6
Not documented
BS 970 (Part 3) 817M40
High tensile shafts, gears, crankshafts
Can IS 4367 40Ni10Cr3Mo6 Be Substituted With BS 970 (Part 3) 817M40?
IS 4367 40Ni10Cr3Mo6 and BS 970 (Part 3) 817M40 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.
Forms & Sizes Available on M-EX
IS 4367 40Ni10Cr3Mo6
No active listings currently.
BS 970 (Part 3) 817M40
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6200–6500 mm (244.09–255.91 in)
On M-EX Right Now
IS 4367 40Ni10Cr3Mo6
0 active listings and RFQs →
BS 970 (Part 3) 817M40
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 4367 40Ni10Cr3Mo6 and BS 970 (Part 3) 817M40?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 4367 40Ni10Cr3Mo6 be substituted with BS 970 (Part 3) 817M40?
IS 4367 40Ni10Cr3Mo6 and BS 970 (Part 3) 817M40 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.