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BS 970 (Part 1) 708H20 vs GOST 4543 20HM

Strong Match — 86.3% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 708H20 (BS 970 (Part 1):1983) and GOST 4543 20HM (GOST 4543-2016) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 708H20 is typically used for case hardening steel supplied to specified hardenability limits (end quench test, table 10)., while GOST 4543 20HM is commonly used for used for gears, camshafts, sleeves, axles, and machine transmission parts.. BS 970 (Part 1) 708H20 is defined under British Standards (BS) (United Kingdom).

As per chemical composition, BS 970 (Part 1) 708H20 vs GOST 4543 20HM is a 86.3% 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 86.3%.

Frequently Compared With BS 970 (Part 1) 708H20:
IS 11169 (Part 1) 12Cr4Mo2 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
86.3%
MECHANICAL MATCH
No shared data
OVERALL
86.3%
Specifications
Property BS 970 (Part 1) 708H20 GOST 4543 20HM
Standard BS 970 (Part 1):1983 GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.17-0.24
Mn (%) 0.60-0.90 0.5-0.8
Cr (%) 0.85-1.15 0.9-1.2
Mo (%) 0.15-0.25 0.15-0.25
P (%) <=0.035 Not specified
S (%) <=0.040 Not specified
Si (%) Not specified 0.17-0.37
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) 708H20 GOST 4543 20HM
Tensile Strength Not specified 780-980 MPa
Yield Strength Not specified 590 MPa min
Elongation Not specified 12% min
Hardness Not specified 56-60 HRC (case)
Typical Applications
BS 970 (Part 1) 708H20
Case hardening steel supplied to specified hardenability limits (end quench test, Table 10).
GOST 4543 20HM
Used for gears, camshafts, sleeves, axles, and machine transmission parts.
Key Differences
Can BS 970 (Part 1) 708H20 Be Substituted With GOST 4543 20HM?
BS 970 (Part 1) 708H20 and GOST 4543 20HM overlap closely enough on chemistry and mechanical properties that GOST 4543 20HM is often considered as a substitute for BS 970 (Part 1) 708H20 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) 708H20
No active listings currently.
GOST 4543 20HM
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6000–6900 mm (236.22–271.65 in)
On M-EX Right Now
BS 970 (Part 1) 708H20
0 active listings and RFQs →
GOST 4543 20HM
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 708H20 and GOST 4543 20HM?
BS 970 (Part 1) 708H20 specifies P, S which are not specified for GOST 4543 20HM. GOST 4543 20HM specifies Si which is not specified for BS 970 (Part 1) 708H20.
Can BS 970 (Part 1) 708H20 be substituted with GOST 4543 20HM?
BS 970 (Part 1) 708H20 and GOST 4543 20HM overlap closely enough on chemistry and mechanical properties that GOST 4543 20HM is often considered as a substitute for BS 970 (Part 1) 708H20 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.