BS 970-1 Grade 070M20 Normalized

BS 970-1 Grade 070M20 Normalized introduction

BS970 Grade 070M20 is a general purpose low carbon steel with low strength but good machinability.

Equivalent material: AISI 1023, SAE 1023, 1.0402, DIN 1.0402, DIN C22, AFNOR C22, BS C22, UNI C21, UNI C20, SS 1450, UNE F.112, AISI 1020, AISI 1022, SAE 1020, SAE 1022, JIS S20C, JIS S22C, EN C22, EN 1.0402, ISO C22, GOST 20, GB 20, GB/T 15, GB/T U20152, GB/T Grade 20, ASTM Grade 1020, UNS G10200, UNS G10220, DIN 1.1151, DIN Ck22, DIN C22E, AFNOR C22E, AFNOR XC18, AFNOR XC25, BS C22E, BS En3A, BS En3C, BS 22CS, BS 22HS, BS 055M15, BS En2, BS CS22, SAE 1023, JIS S20CK, EN C22E, EN 1.1151, ISO S20C, ISO CE20E4, ISO C22E, GB U20202, GB/T 20G, GB/T U50207, GB/T 20Z-III, GB/T 20, GB/T U20202, GB/T U50204, UNS G10230

BS 970-1 Grade 070M20 Normalized general

Property Temperature Value Comment
Density 23.0 °C Density of 7.8 - 7.9 g/cm³ Typical for Low Carbon Steel

BS 970-1 Grade 070M20 Normalized thermal

Property Temperature Value Comment
Coefficient of thermal expansion 23.0 °C Coefficient of thermal expansion of 1.32E-5 - 1.38E-5 1/K Typical for Low Carbon Steel
Max service temperature - Max service temperature of 500 °C Typical for Carbon Steel
Melting point - Melting point of 1480 - 1526 °C Typical for Low Carbon Steel
Specific heat capacity 23.0 °C Specific heat capacity of 465 J/(kg·K) Typical for Low Carbon Steel
Thermal conductivity 23.0 °C Thermal conductivity of 25 - 93 W/(m·K) Typical for Low Carbon Steel

BS 970-1 Grade 070M20 Normalized chemical

Property Value
Carbon Carbon of 0.16 - 0.24 %
Chromium Chromium of 0.3 %
Iron Balance
Manganese Manganese of 0.5 - 0.9 %
Molybdenum Molybdenum of 0.15 %
Nickel Nickel of 0.4 %
Phosphorus Phosphorus of 0.05 %
Silicon Silicon of 0.1 - 0.4 %
Sulfur Sulfur of 0.05 %

BS 970-1 Grade 070M20 Normalized magnetic

Property Value Comment
Curie temperature Curie temperature of 770 °C Typical for Low Carbon Steel

BS 970-1 Grade 070M20 Normalized electrical

Property Temperature Value Comment
Electrical resistivity 23.0 °C Electrical resistivity of 1.43E-7 - 1.74E-7 Ω·m Typical for Carbon Steel

BS 970-1 Grade 070M20 Normalized mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 200 - 215 GPa Typical for Low Carbon Steel
Elongation 23.0 °C Elongation of 21 % -
Hardness, Brinell 23.0 °C Hardness, Brinell of 126 - 179 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Low Carbon Steel
Shear modulus 23.0 °C Shear modulus of 82 GPa Typical for Low Carbon Steel
Tensile strength 23.0 °C Tensile strength of 430 MPa -
Yield strength 23.0 °C Yield strength of 215 MPa -

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