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BS 970 EN49B vs EN 10083-1 51CrV4

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 EN49B (BS 970:1955) and EN 10083-1 51CrV4 (EN 10083-1:1991) are both steel grades. Both fall under the Spring Steel category. BS 970 EN49B is defined under British Standards (BS), originating from United Kingdom, while EN 10083-1 51CrV4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 EN49B vs EN 10083-1 51CrV4 is a 71.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 EN49B:
BS 970 EN42B BS 970 EN42E BS 970 EN42F EN 10089 50CrV4 IS 3195 113C6 IS 3195 50Cr4V2 EN 10083-3 51CrV4 IS 3195 52Cr4Mo2V IS 5517 55Cr3 IS 3431 50Cr4V2 EN 10083-1 51CrV4 EN 10089 55Cr3
Match Breakdown
CHEMISTRY MATCH
71.7%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN49B EN 10083-1 51CrV4
Standard BS 970:1955 EN 10083-1:1991
Category Spring Steel Spring Steel
C (%) 0.45-0.85 0.47-0.55
Si (%) <=0.30 <=0.40
Mn (%) <=1.00 0.70-1.10
S (%) <=0.050 <=0.035
P (%) <=0.050 <=0.035
Cr (%) Not specified 0.90-1.20
V (%) Not specified 0.10-0.25
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 EN49B EN 10083-1 51CrV4
Condition Not specified Quenched and tempered, ruling section d <= 16 mm
Elongation Not specified 9% min
Hardness Not specified Soft annealed: 248 HB max
Tensile Strength Not specified 1100 to 1300 MPa
Yield Strength Not specified 900 MPa min
Typical Applications
BS 970 EN49B
Not documented
EN 10083-1 51CrV4
Quenched and tempered machine parts; non alloy steels also normalized (clause 1)
Key Differences
Can BS 970 EN49B Be Substituted With EN 10083-1 51CrV4?
BS 970 EN49B and EN 10083-1 51CrV4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
On M-EX Right Now
BS 970 EN49B
0 active listings and RFQs →
EN 10083-1 51CrV4
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Frequently Asked Questions
What is the difference between BS 970 EN49B and EN 10083-1 51CrV4?
EN 10083-1 51CrV4 specifies Cr, V which are not specified for BS 970 EN49B.
Can BS 970 EN49B be substituted with EN 10083-1 51CrV4?
BS 970 EN49B and EN 10083-1 51CrV4 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.