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BS 970:1955 EN45 Steel - Specifications & Listings

BS 970:1955 EN45: Silicon manganese spring steel

Forms: Round Bar Flat Bar Category: Spring Steel
Grade Details
GradeBS 970:1955 EN45
StandardBS 970:1955
DescriptionSilicon manganese spring steel
ApplicationsLeaf springs, coil springs, automotive suspension
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
55Si7 DIN Germany 3 listings, 0 RFQs →
AISI 9255 SAE USA 2 listings, 0 RFQs →
SUP6 JIS Japan 2 listings, 0 RFQs →
SAE5160 SAE USA 3 listings, 0 RFQs →
Market Snapshot

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Daily refresh · 07 Aug 2026

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30D Offer Price
▲ +0.1%
Supply & Demand by FormSee Full Supply & Demand →
Round Bar →
Balanced
Flat Bar →
Supply, no demand
Chemical Composition (%)
C Mn Si S P
0.50–0.60 0.70–1.00 1.50–2.00 ≤0.050 ≤0.050
Mechanical Properties
Tensile Strength 1000–1150 MPa
Yield Strength ≥850 MPa
Elongation ≥8%
Hardness 285–341 HB
Typical Available Sizes
Round Bar 10mm–75mm dia
Flat Bar 20×5mm–100×20mm
Spring Flat 3×20mm–16×100mm
Sizes are indicative. Contact seller for exact availability.
Processing:

Active BS 970:1955 EN45 Listings on M-EX (For Sale)

BS 970:1955 EN45 Flat Bar
0.700 MT
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BS 970:1955 EN45 Flat Bar
1.400 MT
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BS 970:1955 EN45 Round Bar
2.800 MT
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BS 970:1955 EN45 Round Bar
0.900 MT
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BS 970:1955 EN45 Round Bar
2.500 MT
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BS 970:1955 EN45 Flat Bar
2.600 MT
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Buyer RFQs for BS 970:1955 EN45

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BS 970:1955 EN45 Round Bar
9.200 MT
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BS 970:1955 EN45 Round Bar
7.200 MT
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BS 970:1955 EN45 Round Bar
7.300 MT
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