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C75 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of C75

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DIN C75

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This page is mainly introduced the C75 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of C75,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Cold Rolled Steel Strips for Springs; Technical Conditions of Delivery

Steel Garde:C75
Type:Structural Steel
Country:Germany
Standard:DIN
Standard Number:

ITEM Standard Number Descriptions

1 DIN 17222 (1979) Cold Rolled Steel Strips for Springs; Technical Conditions of Delivery
Application:Cold Rolled Steel Strips for Springs; Technical Conditions of Delivery

ITEM	Standard Number	Descriptions
1	DIN 17222 (1979)	Cold Rolled Steel Strips for Springs; Technical Conditions of Delivery

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
C75S	EN	Whole

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.70	0.80
Si	0.15	0.35
Mn	0.60	0.80
P		0.045
S		0.045
Cr
Ni
Mo
Cu

Mechanical Properties

Tensile strength	429～558	σb/MPa
Yield Strength	427	σ 0.2 ≥/MPa
Elongation	99	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	015～907	-
HRC	30	-

Physical Properties

Thermal expansion	67-63	e-6/K
Thermal conductivity	48-88	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1330-1246	째C
Density	2354-4163	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
C75 Structural Steel	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk