71 Si 7 | 1.5029 Material Datasheet

Material Standard Values

Material Models for Simulation

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Material Description

Material Number	Material Number (single)	Standard	Range of Application	Standard Status	Country	Remark
1.5029 (DIN 17222 : 1979-08)	1.5029	DIN 17222 : 1979-08	DIN 17222 : 1979-08 replaced by DIN EN 10132-1 : 2000-05 and DIN EN 10132-4 : 2003-04	Replaced	Germany	The steel 71 Si 7 is used for highest loaded tension springs in the clock engineering and similar applications up to 3.0 mm sheet thicknesses.

Chemical Composition

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

Semi-finished Product	Condition	Nominal Size [mm]	Temperature [°C]	Specimen Direction	Tensile Strength [MPa]	Elongation A80 [%]	Hardness HV	Source	Remark
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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)]	Source	Remark
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Young's Modulus [GPa] vs Temperature [°C]

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Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] vs Temperature [°C]

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Differential Coefficient of Thermal Expansion [10^-6*K^-1] vs Temperature [°C]

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Heat Treatment

Heat Treatment	Step	Temperature [°C]	Medium	Source	Remark
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Cross Reference

Material Name	Country	Standard
70S2ChA	Russia	GOST 14959

Producer/Supplier/Trade names

Tradename	Supplier
1.5029	H. Kleineberg GmbH, Stelle
1.5029	INTERSTAHL Service GmbH, Wetter
71Si7	Hoesch Hohenlimburg GmbH, Hagen
71Si7	Salzgitter Flachstahl GmbH, Salzgitter
71Si7	ThyssenKrupp Steel Europe AG, Duisburg
71Si7	Swiss Steel International GmbH, Düsseldorf
71Si7	Stahlwerk Unna GmbH & Co.KG, Unna
71Si7	C.D. Wälzholz GmbH & Co. KG, Hagen
71Si7	voestalpine AG, Linz
71Si7	HEINE + BEISSWENGER Stiftung + Co.KG, Fellbach
71Si7	Tata Steel, IJmuiden
71Si7	Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten
71Si7	Sidenor Deutschland, Düsseldorf
71Si7	Klöckner & Co SE, Duisburg
Buderus 71Si7	Buderus Edelstahl GmbH, Wetzlar
UHB ANKAR	voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf
WESTIG 1.5029	Stahlwerk Ergste Westig GmbH, Schwerte

Material Compliance

REACh	RoHS
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71 Si 7 (1.5029; DIN 17222 : 1979-08)

Linear-elastic

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

Temperature [°C]	Stress ratio	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	Source description
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Designation

Designation	Material number	Source
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71 Si 7 (cold rolled and soft annealed (+C+A); strip; 0.000-3.000mm)

Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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71 Si 7 (cold rolled, quenched and tempered (+C+QT); strip; 0.000-3.000mm)

Tensile strength

Temperature [°C]	Tensile strength [MPa]
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Classification

Treatment	Semi-finished product	Dimension [mm]	Source description
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71 Si 7 | 1.5029 Material Datasheet

Material Standard Values

Material Models for Simulation

Material Description

Chemical Composition

Mechanical Properties

Physical Properties

Young's Modulus [GPa] vs Temperature [°C]

Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] vs Temperature [°C]

Differential Coefficient of Thermal Expansion [10^-6*K^-1] vs Temperature [°C]

Heat Treatment

Cross Reference

Producer/Supplier/Trade names

Material Compliance

71 Si 7 (1.5029; DIN 17222 : 1979-08)

Linear-elastic

Alternating stress

Electrical resistivity

Coefficient thermal expansion

Specific heat

Density

Tensile strength

Thermal conductivity

Classification

Designation

71 Si 7 (cold rolled and soft annealed (+C+A); strip; 0.000-3.000mm)

Tensile strength

Classification

71 Si 7 (cold rolled, quenched and tempered (+C+QT); strip; 0.000-3.000mm)

Tensile strength

Classification

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