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EN 10083-3 27MnCrB5-2 vs BS 970 (Part 1) 523M15

Close Alternative — 74.3% match based on chemical composition and mechanical property overlap.

EN 10083-3 27MnCrB5-2 (EN 10083-3:2006) and BS 970 (Part 1) 523M15 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. EN 10083-3 27MnCrB5-2 is typically used for quenched and tempered, flame or induction hardened machine parts (clause 1), while BS 970 (Part 1) 523M15 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties).. EN 10083-3 27MnCrB5-2 is defined under European Standard (EN), originating from Europe, while BS 970 (Part 1) 523M15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, EN 10083-3 27MnCrB5-2 vs BS 970 (Part 1) 523M15 is a 74.3% 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 74.3%.

Frequently Compared With EN 10083-3 27MnCrB5-2:
IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Mo6 IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
74.3%
MECHANICAL MATCH
No shared data
OVERALL
74.3%
Specifications
Property EN 10083-3 27MnCrB5-2 BS 970 (Part 1) 523M15
Standard EN 10083-3:2006 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
B (%) 0.0008-0.0050 Not specified
C (%) 0.24-0.30 0.12-0.18
Cr (%) 0.30-0.60 0.30-0.60
Mn (%) 1.10-1.40 0.30-0.60
P (%) <=0.025 <=0.035
S (%) <=0.035 <=0.040
Si (%) <=0.40 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 EN 10083-3 27MnCrB5-2 BS 970 (Part 1) 523M15
Condition Quenched and tempered (+QT), ruling section d <= 16 mm Not specified
Elongation 14% min Not specified
Tensile Strength 1000 to 1250 MPa Not specified
Yield Strength 800 MPa min Not specified
Typical Applications
EN 10083-3 27MnCrB5-2
Quenched and tempered, flame or induction hardened machine parts (clause 1)
BS 970 (Part 1) 523M15
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Key Differences
Can EN 10083-3 27MnCrB5-2 Be Substituted With BS 970 (Part 1) 523M15?
EN 10083-3 27MnCrB5-2 and BS 970 (Part 1) 523M15 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.
On M-EX Right Now
EN 10083-3 27MnCrB5-2
0 active listings and RFQs →
BS 970 (Part 1) 523M15
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10083-3 27MnCrB5-2 and BS 970 (Part 1) 523M15?
EN 10083-3 27MnCrB5-2 specifies B, Si which are not specified for BS 970 (Part 1) 523M15.
Can EN 10083-3 27MnCrB5-2 be substituted with BS 970 (Part 1) 523M15?
EN 10083-3 27MnCrB5-2 and BS 970 (Part 1) 523M15 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.