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1.2550 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.2550

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DIN 1.2550

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This page is mainly introduced the 1.2550 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.2550,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Tool Steels; Technical Conditions of Delivery

Steel Garde:1.2550
Type:Tool Die Steels
Country:Germany
Standard:DIN
Standard Number:

ITEM Standard Number Descriptions

1 DIN 17350 (1980) Tool Steels; Technical Conditions of Delivery
Application:Tool Steels; Technical Conditions of Delivery

ITEM	Standard Number	Descriptions
1	DIN 17350 (1980)	Tool Steels; Technical Conditions of Delivery

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.55	0.65
Si	0.50	0.70
Mn	0.15	0.45
P		0.030
S		0.030
Cr	0.90	1.20
Mo
V	0.10	0.20
W	1.80	2.10

Mechanical Properties

Tensile strength	666～985	σb/MPa
Yield Strength	490	σ 0.2 ≥/MPa
Elongation	94	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	989～264	-
HRC	30	-

Physical Properties

Thermal expansion	55-26	e-6/K
Thermal conductivity	82-40	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3947-1106	째C
Density	6831-0907	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)
1.2550 Tool Die Steels	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