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10S20 | 1.0721 Material Datasheet

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Material Description

Material Number	Material Number (single)	Standard	Range of Application	Standard Status	Country	Predecessor
1.0721 (DIN EN ISO 683-4 : 2018-09)	1.0721	DIN EN ISO 683-4 : 2018-09	Supersedes DIN EN 10087 : 1999-01	Valid	Germany	10S20	1)
1) Remark: Free-cutting steel 10S20, suitable for case-hardening, shows considerably uniformer properties of the cross-section and within the melt than older semi-killed free cutting steels. Compared to 15 S 10 (DIN 1651: 1988-04) shows 10S20 a slightly enhanced machinability at relatively favorable ductility properties. Application for thin-walled case hardened parts in car industry, in apparatus, equipment and machine engineering.

Chemical Composition

C [%]	Mn [%]	P [%]	S [%]	Si [%]
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Mechanical Properties

Semi-finished Product	Condition	Nominal Size [mm]	Temperature [°C]	Tensile Strength [MPa]	Hardness HB \| HBW
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Physical Properties

Temperature [°C]	Density [g/cm³]	Young's Modulus [GPa]	Shear Modulus [GPa]	Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1]	Differential Coefficient of Thermal Expansion [10^-6*K^-1]	Thermal Conductivity [W/(m*K)]	Thermal Diffusivity [10^-6 m²/s]	Specific Electrical Resistance [µΩm]	Mean Specific Heat Capacity [kJ/(kg*K)]	True Specific Heat Capacity [kJ/(kg*K)]
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Heat Treatment

Heat Treatment	Step	Temperature [°C]	Holding Time [h]	Medium
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Cross Reference

Material Name	Country	Standard
Y12	China	GB/T 8731	1)
U71122	China	ISC	2)
1.0721	Europe	EN 10087	1)
10S20	Europe	EN 10087	1)
10C8S10	India	IS 4431	2)
10S20	Europe	EN ISO 683-4
10S20	International	ISO 683-4
SUM12	Japan	JIS G 4804	2)
SUM12	South Korea	KS D 3567	2)
A12	Russia	GOST 1414	2)
1108	USA	SAE J1397	2)
G11080	USA	UNS	2)
1109	USA	SAE	2)
G11090	USA	UNS	2)
1) Source: EN ISO 683-4 : 2018-06
2) Source: Stahlschlüssel 2016, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename	Supplier
10S20	ArcelorMittal Distribution GmbH, Köln
10S20	HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
10S20	Swiss Steel International GmbH, Düsseldorf
10S20	Saarstahl AG, Völklingen
10S20	voestalpine AG, Linz

Material Compliance

REACh	RoHS
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Linear-elastic

Temperature [°C]	Young's modulus [GPa]	Bulk modulus [GPa]	Shear modulus [GPa]	Poisson's ratio
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Alternating stress

Temperature [°C]	Stress ratio	Mean stress [MPa]	Alternating stress [MPa]	Cycles
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Electrical resistivity

Temperature [°C]	Specific electrical resistance [µΩm]
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Coefficient thermal expansion

Related Temperature [°C]	Temperature [°C]	Coefficient thermal expansion [10^-6*K^-1]
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Specific heat

Temperature [°C]	Specific heat [kJ/(kg*K)]
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Density

Temperature [°C]	Density [g/cm³]
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Thermal conductivity

Temperature [°C]	Thermal conductivity [W/(m*K)]
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Classification

WIAM Material	Treatment	Semi-finished product	Dimension [mm]	Load type	Failure criteria	Rolling direction	Maximum stress [MPa]	Strain at maximum stress [%]	Source description
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Designation

Designation	Material number	Source
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

WIAM Material	Treatment	Semi-finished product	Dimension [mm]	Load type	Failure criteria	Rolling direction	Maximum stress [MPa]	Strain at maximum stress [%]	Source description
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

WIAM Material	Treatment	Semi-finished product	Dimension [mm]	Load type	Failure criteria	Rolling direction	Maximum stress [MPa]	Strain at maximum stress [%]	Source description
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

WIAM Material	Treatment	Semi-finished product	Dimension [mm]	Load type	Failure criteria	Rolling direction	Maximum stress [MPa]	Strain at maximum stress [%]	Source description
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

WIAM Material	Treatment	Semi-finished product	Dimension [mm]	Load type	Failure criteria	Rolling direction	Maximum stress [MPa]	Strain at maximum stress [%]	Source description
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Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

WIAM Material	Treatment	Semi-finished product	Dimension [mm]	Load type	Failure criteria	Rolling direction	Maximum stress [MPa]	Strain at maximum stress [%]	Source description
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10S20 | 1.0721 Material Datasheet

Material Test Series Values

Material Standard Values

Material Models for Simulation

Material Description

Chemical Composition

Mechanical Properties

Physical Properties

Heat Treatment

Cross Reference

Producer/Supplier/Trade names

Material Compliance

Linear-elastic

Alternating stress

Electrical resistivity

Coefficient thermal expansion

Specific heat

Density

Tensile strength

Thermal conductivity

Classification

Designation

Tensile strength

Classification

Tensile strength

Classification

Tensile strength

Classification

Tensile strength

Classification

Tensile strength

Classification

10S20 | 1.0721 Material Datasheet

Material Test Series Values

Material Standard Values

Material Models for Simulation

TTT curves

Material Description

Chemical Composition

Mechanical Properties

Physical Properties

Heat Treatment

Cross Reference

Producer/Supplier/Trade names

Material Compliance

10S20 (1.0721; DIN EN ISO 683-4 : 2018-09)

Linear-elastic

Alternating stress

Electrical resistivity

Coefficient thermal expansion

Specific heat

Density

Tensile strength

Thermal conductivity

Classification

Designation

10S20 (untreated; wire; 10.000-16.000mm)

Tensile strength

Classification

10S20 (untreated; wire; 16.000-40.000mm)

Tensile strength

Classification

10S20 (untreated; wire; 40.000-63.000mm)

Tensile strength

Classification

10S20 (untreated; wire; 5.000-10.000mm)

Tensile strength

Classification

10S20 (untreated; wire; 63.000-100.000mm)

Tensile strength

Classification