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BS 970 (Part 1) 655H13 vs BS 970 (Part 1) 655M13

Strong Match — 98.6% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 655H13 (BS 970 (Part 1):1983) and BS 970 (Part 1) 655M13 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 655H13 is typically used for case hardening steel supplied to specified hardenability limits (end quench test, table 10)., while BS 970 (Part 1) 655M13 is commonly used for case hardened gears, heavily loaded shafts. BS 970 (Part 1) 655H13 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 655M13 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 655H13 vs BS 970 (Part 1) 655M13 is a 98.6% 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 98.6%.

Frequently Compared With BS 970 (Part 1) 655H13:
IS 11169 (Part 1) 12Ni3Cr2 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Mo6H GB/T 3077 12CrNi2 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
98.6%
MECHANICAL MATCH
No shared data
OVERALL
98.6%
Specifications
Property BS 970 (Part 1) 655H13 BS 970 (Part 1) 655M13
Standard BS 970 (Part 1):1983 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.10-0.16 0.10-0.16
Mn (%) 0.35-0.60 0.35-0.60
Cr (%) 0.70-1.00 0.70-1.00
Ni (%) 3.00-3.75 3.00-3.75
P (%) <=0.035 Not specified
S (%) <=0.040 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 BS 970 (Part 1) 655H13 BS 970 (Part 1) 655M13
Condition Not specified Case hardened, 19 mm test bar
Tensile Strength Not specified 1000 MPa min
Elongation Not specified 9 % min
Typical Applications
BS 970 (Part 1) 655H13
Case hardening steel supplied to specified hardenability limits (end quench test, Table 10).
BS 970 (Part 1) 655M13
Case hardened gears, heavily loaded shafts
Key Differences
Can BS 970 (Part 1) 655H13 Be Substituted With BS 970 (Part 1) 655M13?
BS 970 (Part 1) 655H13 and BS 970 (Part 1) 655M13 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 655M13 is often considered as a substitute for BS 970 (Part 1) 655H13 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
BS 970 (Part 1) 655H13
No active listings currently.
BS 970 (Part 1) 655M13
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4200–6300 mm (165.35–248.03 in)
On M-EX Right Now
BS 970 (Part 1) 655H13
0 active listings and RFQs →
BS 970 (Part 1) 655M13
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 655H13 and BS 970 (Part 1) 655M13?
BS 970 (Part 1) 655H13 specifies P, S which are not specified for BS 970 (Part 1) 655M13.
Can BS 970 (Part 1) 655H13 be substituted with BS 970 (Part 1) 655M13?
BS 970 (Part 1) 655H13 and BS 970 (Part 1) 655M13 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 655M13 is often considered as a substitute for BS 970 (Part 1) 655H13 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.