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BS 970 EN111A vs GOST 4543 40XH

Close Alternative — 82.4% match based on chemical composition and mechanical property overlap.

BS 970 EN111A (BS 970:1955) and GOST 4543 40XH (GOST 4543-2016) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN111A is defined under British Standards (BS) (United Kingdom).

As per chemical composition, BS 970 EN111A vs GOST 4543 40XH is a 82.4% 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 82.4%.

Frequently Compared With BS 970 EN111A:
IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
82.4%
MECHANICAL MATCH
No shared data
OVERALL
82.4%
Specifications
Property BS 970 EN111A GOST 4543 40XH
Standard BS 970:1955 GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) 0.33-0.38 0.36-0.44
Si (%) 0.10-0.35 0.17-0.37
Mn (%) 0.60-0.90 0.50-0.80
Ni (%) 1.00-1.50 1.00-1.40
Cr (%) 0.45-0.75 0.45-0.75
S (%) <=0.050 <=0.035
P (%) <=0.050 <=0.035
Cu (%) Not specified <=0.30
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 EN111A GOST 4543 40XH
Tensile Strength Not specified 980-1180 MPa
Yield Strength Not specified >=785 MPa
Elongation Not specified >=10%
Hardness Not specified 241-285 HB
Typical Applications
BS 970 EN111A
Not documented
GOST 4543 40XH
heavy-duty gears, transmission shafts, axles, high-strength fasteners, forged machinery parts
Key Differences
Can BS 970 EN111A Be Substituted With GOST 4543 40XH?
BS 970 EN111A and GOST 4543 40XH 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
BS 970 EN111A
No active listings currently.
GOST 4543 40XH
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5900–6100 mm (232.28–240.16 in)
On M-EX Right Now
BS 970 EN111A
0 active listings and RFQs →
GOST 4543 40XH
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN111A and GOST 4543 40XH?
GOST 4543 40XH specifies Cu which is not specified for BS 970 EN111A.
Can BS 970 EN111A be substituted with GOST 4543 40XH?
BS 970 EN111A and GOST 4543 40XH 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.