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BS 970 (Part 1) 170H20 vs EN 10083-3 20MnB5

Strong Match — 86.6% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 170H20 (BS 970 (Part 1):1991) and EN 10083-3 20MnB5 (EN 10083-3:2006) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 170H20 is typically used for through hardening boron steel (section three), while EN 10083-3 20MnB5 is commonly used for quenched and tempered, flame or induction hardened machine parts (clause 1). BS 970 (Part 1) 170H20 is defined under British Standards (BS), originating from United Kingdom, while EN 10083-3 20MnB5 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 (Part 1) 170H20 vs EN 10083-3 20MnB5 is a 86.6% 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 86.6%.

Frequently Compared With BS 970 (Part 1) 170H20:
IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
86.6%
MECHANICAL MATCH
No shared data
OVERALL
86.6%
Specifications
Property BS 970 (Part 1) 170H20 EN 10083-3 20MnB5
Standard BS 970 (Part 1):1991 EN 10083-3:2006
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.17-0.23
Mn (%) 0.80-1.10 1.10-1.40
B (%) 0.0005-0.005 0.0008-0.0050
P (%) Not specified <=0.025
S (%) Not specified <=0.035
Si (%) Not specified <=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 BS 970 (Part 1) 170H20 EN 10083-3 20MnB5
Condition Not specified Quenched and tempered (+QT), ruling section d <= 16 mm
Elongation Not specified 14% min
Tensile Strength Not specified 900 to 1050 MPa
Yield Strength Not specified 700 MPa min
Typical Applications
BS 970 (Part 1) 170H20
Through hardening boron steel (section three)
EN 10083-3 20MnB5
Quenched and tempered, flame or induction hardened machine parts (clause 1)
Key Differences
Can BS 970 (Part 1) 170H20 Be Substituted With EN 10083-3 20MnB5?
BS 970 (Part 1) 170H20 and EN 10083-3 20MnB5 overlap closely enough on chemistry and mechanical properties that EN 10083-3 20MnB5 is often considered as a substitute for BS 970 (Part 1) 170H20 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 (Part 1) 170H20
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EN 10083-3 20MnB5
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 170H20 and EN 10083-3 20MnB5?
EN 10083-3 20MnB5 specifies P, S, Si which are not specified for BS 970 (Part 1) 170H20.
Can BS 970 (Part 1) 170H20 be substituted with EN 10083-3 20MnB5?
BS 970 (Part 1) 170H20 and EN 10083-3 20MnB5 overlap closely enough on chemistry and mechanical properties that EN 10083-3 20MnB5 is often considered as a substitute for BS 970 (Part 1) 170H20 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.