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Rp4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Rp4

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STAS/SR Rp4

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This page is mainly introduced the Rp4 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Rp4,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Rp4

Steel Garde:Rp4
Type:Special Alloy
Country:Romania
Standard:STAS/SR
Application:tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	721～230	σb/MPa
Yield Strength	635	σ 0.2 ≥/MPa
Elongation	60	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	680～013	-
HRC	30	-

Physical Properties

Thermal expansion	76-51	e-6/K
Thermal conductivity	33-10	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4980-2425	째C
Density	7905-1081	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)
Rp4 Special Alloy	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