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IS 1570 (Part 4) 30Ni16Cr5 vs BS 970 (Part 3) 655M13

Close Alternative — 70.3% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 30Ni16Cr5 (IS 1570 (Part 4):1988) and BS 970 (Part 3) 655M13 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 30Ni16Cr5 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 655M13 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 4) 30Ni16Cr5 vs BS 970 (Part 3) 655M13 is a 70.3% 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 70.3%.

Frequently Compared With IS 1570 (Part 4) 30Ni16Cr5:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H GB/T 3077 12Cr2Ni4A IS 4367 07Cr4Mo6 IS 1570 (Part 7) 12Cr2Mo5V2H
Match Breakdown
CHEMISTRY MATCH
70.3%
MECHANICAL MATCH
No shared data
OVERALL
70.3%
Specifications
Property IS 1570 (Part 4) 30Ni16Cr5 BS 970 (Part 3) 655M13
Standard IS 1570 (Part 4):1988 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.26-0.34 0.10-0.16
Si (%) 0.10-0.35 0.10-0.40
Mn (%) 0.40-0.70 0.35-0.60
Ni (%) 3.90-4.30 3.00-3.75
Cr (%) 1.10-1.40 0.70-1.00
P (%) Not specified <=0.04
S (%) Not specified <=0.05
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) 30Ni16Cr5 BS 970 (Part 3) 655M13
Tensile Strength >=1540 MPa Not specified
Yield Strength >=1240 MPa (0.2 % proof stress) Not specified
Elongation >=8% Not specified
Izod Impact >=14 J Not specified
Hardness >=444 HBS (guidance only) Not specified
Condition Bars and forgings, hardened and tempered (oil hardened unless stated), limiting ruling section 150 (oil hardened) mm Not specified
Typical Applications
IS 1570 (Part 4) 30Ni16Cr5
Not documented
BS 970 (Part 3) 655M13
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Key Differences
Can IS 1570 (Part 4) 30Ni16Cr5 Be Substituted With BS 970 (Part 3) 655M13?
IS 1570 (Part 4) 30Ni16Cr5 and BS 970 (Part 3) 655M13 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 1570 (Part 4) 30Ni16Cr5
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BS 970 (Part 3) 655M13
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Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 30Ni16Cr5 and BS 970 (Part 3) 655M13?
BS 970 (Part 3) 655M13 specifies P, S which are not specified for IS 1570 (Part 4) 30Ni16Cr5.
Can IS 1570 (Part 4) 30Ni16Cr5 be substituted with BS 970 (Part 3) 655M13?
IS 1570 (Part 4) 30Ni16Cr5 and BS 970 (Part 3) 655M13 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.