Strong Match — 90.3% match
based on chemical composition and mechanical property overlap.
EN 10083-1 34Cr4 (EN 10083-1:1996) and BS 970 (Part 3) 530M40 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Alloy Steel category.
EN 10083-1 34Cr4 is typically used for quenched and tempered machine parts (clause 1.1), 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 10083-1 34Cr4 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 10083-1 34Cr4 vs BS 970 (Part 3) 530M40 is a 90.3% 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 90.3%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10083-1 34Cr4
BS 970 (Part 3) 530M40
Condition
Quenched and tempered, ruling section d <= 16 mm
Not specified
Elongation
12% min
Not specified
Hardness
Soft annealed: 223 HB max
Not specified
Tensile Strength
900 to 1100 MPa
Not specified
Yield Strength
700 MPa min
Not specified
Typical Applications
EN 10083-1 34Cr4
Quenched and tempered machine parts (clause 1.1)
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 10083-1 34Cr4 Be Substituted With BS 970 (Part 3) 530M40?
EN 10083-1 34Cr4 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 10083-1 34Cr4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between EN 10083-1 34Cr4 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 10083-1 34Cr4 be substituted with BS 970 (Part 3) 530M40?
EN 10083-1 34Cr4 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 10083-1 34Cr4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.