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IS 1570 (Part 4) 15Ni7Cr4Mo2 vs BS 970 (Part 1) 820M17

Strong Match — 85.4% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 15Ni7Cr4Mo2 (IS 1570 (Part 4):1988) and BS 970 (Part 1) 820M17 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 15Ni7Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 820M17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 4) 15Ni7Cr4Mo2 vs BS 970 (Part 1) 820M17 is a 85.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 85.4%.

Frequently Compared With IS 1570 (Part 4) 15Ni7Cr4Mo2:
GOST 4543 12HN3A IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 GB/T 3077 12Cr2Ni4A UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
85.4%
MECHANICAL MATCH
No shared data
OVERALL
85.4%
Specifications
Property IS 1570 (Part 4) 15Ni7Cr4Mo2 BS 970 (Part 1) 820M17
Standard IS 1570 (Part 4):1988 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
C (%) 0.12-0.18 0.14-0.20
Si (%) 0.15-0.35 Not specified
Mn (%) 0.60-1.00 0.60-0.90
Ni (%) 1.50-2.00 1.50-2.00
Cr (%) 0.75-1.25 0.80-1.20
Mo (%) 0.10-0.20 0.10-0.20
P (%) Not specified <=0.035
S (%) Not specified <=0.040
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) 15Ni7Cr4Mo2 BS 970 (Part 1) 820M17
Tensile Strength >=1080 MPa Not specified
Elongation >=9% Not specified
Izod Impact >=35 J Not specified
Condition Case hardening steel, refined and quenched, core properties Not specified
Typical Applications
IS 1570 (Part 4) 15Ni7Cr4Mo2
Not documented
BS 970 (Part 1) 820M17
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Key Differences
Can IS 1570 (Part 4) 15Ni7Cr4Mo2 Be Substituted With BS 970 (Part 1) 820M17?
IS 1570 (Part 4) 15Ni7Cr4Mo2 and BS 970 (Part 1) 820M17 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 820M17 is often considered as a substitute for IS 1570 (Part 4) 15Ni7Cr4Mo2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
IS 1570 (Part 4) 15Ni7Cr4Mo2
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BS 970 (Part 1) 820M17
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Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 15Ni7Cr4Mo2 and BS 970 (Part 1) 820M17?
IS 1570 (Part 4) 15Ni7Cr4Mo2 specifies Si which is not specified for BS 970 (Part 1) 820M17. BS 970 (Part 1) 820M17 specifies P, S which are not specified for IS 1570 (Part 4) 15Ni7Cr4Mo2.
Can IS 1570 (Part 4) 15Ni7Cr4Mo2 be substituted with BS 970 (Part 1) 820M17?
IS 1570 (Part 4) 15Ni7Cr4Mo2 and BS 970 (Part 1) 820M17 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 820M17 is often considered as a substitute for IS 1570 (Part 4) 15Ni7Cr4Mo2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.