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8MnSi chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8MnSi

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GB 8MnSi

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This page is mainly introduced the 8MnSi chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8MnSi,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Alloy tool steels of 8MnSi

Steel Garde:8MnSi
Type:Tool Die Steels
Country:China
Standard:GB
Standard Number:

ITEM Standard Number Descriptions

1 GB/T 1299 (2000) Alloy tool steels
Application:Alloy tool steels

ITEM	Standard Number	Descriptions
1	GB/T 1299 (2000)	Alloy tool steels

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.75	0.85
Si	0.30	0.60
Mn	0.80	1.10
P		0.030
S		0.030
Cr		0.025
Ni		0.020
Cu		0.30

Mechanical Properties

Tensile strength	858～760	σb/MPa
Yield Strength	717	σ 0.2 ≥/MPa
Elongation	49	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	942～825	-
HRC	30	-

Physical Properties

Thermal expansion	39-82	e-6/K
Thermal conductivity	16-42	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5645-7182	째C
Density	9226-9201	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)
8MnSi 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