10SPb20 (France / AFNOR NF) Material Properties

Other designations:
Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: France / AFNOR NF

Data updates

Latest Update: 2024-12
Total number of updates: 3
Update History:
2018-10 2018-09

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 350 — 780 MPa view details
Elongation, A 7 % view details
Brinell Hardness (HB) 105 — 156 view details
Grain Size val1
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Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 50.8 — 113.1 ksi view details
Elongation, A 7 % view details
Brinell Hardness (HB) 105 — 156 view details
Grain Size val1
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view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Density 7.67 — 7.86 kg/dm³ view details
Poisson Coefficient val1
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Thermal Conductivity 47 W/(m∙°C) view details
Heat Capacity val1
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J/(kg∙°C) view details
Melting Temperature val1
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°C view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Density 0.277 — 0.284 lb/in³ view details
Poisson Coefficient val1
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view details
Thermal Conductivity 27.2 BTU/(h∙ft∙°F) view details
Heat Capacity val1
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BTU/(lb∙°F) view details
Melting Temperature val1
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°F view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.07 – 0.13
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.70 – 1.10
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Other
VALUE
Elements such as Te, Bi etc., may only be added by the manufacturer for improving machinability
UNIT
%
CAS NUMBER
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
Pb
VALUE
val1
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UNIT
%
CAS NUMBER
7439-92-1
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

EN 10087: 1998 / Free-cutting steels - Technical delivery conditions for semi-finished products, hot-rolled bars and rods

Heat Treatments

  • Carburizing: 880-980°C. The carburizing temperature will depend on the chemical composition of the steel, the mass of the product, and the carburizing medium. If the steels are direct hardened, in general a temperature of 950°C is not exceeded. For special procedures, for example under vacuum, higher temperatures, for example 1020°C to 1050°C, are not unusual; <br>Direct and simple hardening: 830-870°C; <br>Double hardening: Core-hardening: 880-920°C and case-hardening: 780-820°C;<br>Quenching agent: water, oil, emulsion (depends, for example, on the shape of the products, the cooling conditions and the quantity of furnace filling); <br>Tempering: 150-200°C (1h minimum).
  • Carburizing: 880-980°C. The carburizing temperature will depend on the chemical composition of the steel, the mass of the product, and the carburizing medium. If the steels are direct hardened, in general, a temperature of 950°C is not exceeded. For special procedures, for example under vacuum, higher temperatures (for example 1 020 to 1 050°C) are not unusual; <br /> Core-hardening: 880-920°C. When applying the single quench method, the steel is to be quenched from the carburizing temperature or a lower temperature. The lower hardening temperatures are in each case to be preferred, in particular when there is risk of distortion; Case-hardening: 780-820°C;<br /> Quenching agent: water, oil, emulsion. The kind of quenching agent depends on, for example, the shape of the products, the cooling conditions and the amount of furnace filling;<br /> Tempering: 150-200°C (1 h minimum).