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BS 970:1955 EN24 Steel — Specifications & Listings

BS 970:1955

Ni-Cr-Mo high tensile alloy steel

Forms: Round Bar Flat Bar Hex Bar Forging Category: Alloy Steel
Grade Details
GradeBS 970:1955 EN24
StandardBS 970:1955
DescriptionNi-Cr-Mo high tensile alloy steel
ApplicationsHeavy duty gears, shafts, connecting rods
Equivalent / Similar Grades
Grade Standard Region
817M40 BS970 UK
AISI 4340 AISI USA
36CrNiMo4 EN Europe
34CrNiMo6 DIN/EN Europe
SNCM439 JIS Japan
SAE4340 SAE USA
40HNMA GOST Russia
34NCD6 NF France
SS 2258 SS 14 22 58 Sweden
IS 4367 31Ni3Cr2Mo IS 4367 India
GB/T 40CrNiMoA GB/T 3077 China
Chemical Composition (%)
C Si Mn Cr Mo Ni S P
0.36–0.44 0.10–0.35 0.45–0.70 1.00–1.40 0.20–0.35 1.30–1.70 ≤0.040 ≤0.035
Mechanical Properties
Tensile Strength 850–1000 MPa
Yield Strength ≥680 MPa
Elongation ≥13%
Hardness 248–302 HB
Impact (Charpy) ≥54 J
Typical Available Sizes
Round Bar 20mm – 350mm dia
Flat Bar 25×10mm – 250×75mm
Sizes are indicative. Contact seller for exact availability.

Active BS 970:1955 EN24 Listings on M-EX

BS 970:1955 EN24 Round Bar
1.100 MT
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BS 970:1955 EN24 Round Bar
1.200 MT
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BS 970:1955 EN24 Round Bar
1.100 MT
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BS 970:1955 EN24 Round Bar
0.900 MT
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BS 970:1955 EN24 Round Bar
1.000 MT
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BS 970:1955 EN24 Round Bar
1.300 MT
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BS 970:1955 EN24 Round Bar
0.800 MT
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BS 970:1955 EN24 Round Bar
1.300 MT
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BS 970:1955 EN24 Hex Bar
2.000 MT
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BS 970:1955 EN24 Round Bar
1.600 MT
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