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EN 10083-3 37CrS4 vs BS 970 (Part 3) 530M40

Strong Match — 92% match based on chemical composition and mechanical property overlap.

EN 10083-3 37CrS4 (EN 10083-3:2006) and BS 970 (Part 3) 530M40 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. EN 10083-3 37CrS4 is typically used for quenched and tempered, flame or induction hardened machine parts (clause 1), while BS 970 (Part 3) 530M40 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16). EN 10083-3 37CrS4 is defined under European Standard (EN), originating from Europe, while BS 970 (Part 3) 530M40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, EN 10083-3 37CrS4 vs BS 970 (Part 3) 530M40 is a 92% 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 92%.

Frequently Compared With EN 10083-3 37CrS4:
NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
92%
MECHANICAL MATCH
No shared data
OVERALL
92%
Specifications
Property EN 10083-3 37CrS4 BS 970 (Part 3) 530M40
Standard EN 10083-3:2006 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.34-0.41 0.36-0.44
Cr (%) 0.90-1.20 0.90-1.20
Mn (%) 0.60-0.90 0.60-0.90
P (%) <=0.025 <=0.035
S (%) 0.020-0.040 <=0.040
Si (%) <=0.40 0.10-0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10083-3 37CrS4 BS 970 (Part 3) 530M40
Condition Quenched and tempered (+QT), ruling section d <= 16 mm Not specified
Elongation 11% min Not specified
Hardness Soft annealed (+A): 235 HBW max Not specified
Tensile Strength 950 to 1150 MPa Not specified
Yield Strength 750 MPa min Not specified
Typical Applications
EN 10083-3 37CrS4
Quenched and tempered, flame or induction hardened machine parts (clause 1)
BS 970 (Part 3) 530M40
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
Can EN 10083-3 37CrS4 Be Substituted With BS 970 (Part 3) 530M40?
EN 10083-3 37CrS4 and BS 970 (Part 3) 530M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 530M40 is often considered as a substitute for EN 10083-3 37CrS4 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
EN 10083-3 37CrS4
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BS 970 (Part 3) 530M40
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Frequently Asked Questions
What is the difference between EN 10083-3 37CrS4 and BS 970 (Part 3) 530M40?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10083-3 37CrS4 be substituted with BS 970 (Part 3) 530M40?
EN 10083-3 37CrS4 and BS 970 (Part 3) 530M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 530M40 is often considered as a substitute for EN 10083-3 37CrS4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.