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1.2721 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.2721

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DIN 1.2721

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This page is mainly introduced the 1.2721 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.2721,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Alloyed NiCr steel

Steel Garde:1.2721
Type:Tool Die Steels
Country:Germany
Standard:DIN
Application:Alloyed NiCr steel

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.45	0.55
Si	0.15	0.35
Mn	0.40	0.60
P		0.035
S		0.035
Cr	0.90	1.20
Mo
V
Ni	3.00	3.50

Mechanical Properties

Tensile strength	863～213	σb/MPa
Yield Strength	726	σ 0.2 ≥/MPa
Elongation	30	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	605～348	-
HRC	30	-

Physical Properties

Thermal expansion	03-27	e-6/K
Thermal conductivity	99-65	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7828-5660	째C
Density	4041-6569	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)
1.2721 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