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Pyromet 31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Pyromet 31

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UNS Pyromet 31

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This page is mainly introduced the Pyromet 31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Pyromet 31,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Engine poppet valve information report

Steel Garde:Pyromet 31
Type:Stainless Steels
Country:USA
Standard:UNS
Standard Number:

ITEM Standard Number Descriptions

1 SAE J 775 (2004) Engine poppet valve information report
Metallographic Structure:Precipitation-Hardening
Application:Engine poppet valve information report

ITEM	Standard Number	Descriptions
1	SAE J 775 (2004)	Engine poppet valve information report

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
Pyromet 31V	UNS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.03	0.06
Si		0.20
Mn		0.20
Cr	22.00	23.00
Ni	55.00	58.00
Mo	1.70	2.30
Co
W
Al	1.00	1.70
Cu	0.60	1.20
Ti	2.10	2.60
Fe		remaining
B	0.003	0.007
P		0.015
S		0.015

Mechanical Properties

Tensile strength	347～271	σb/MPa
Yield Strength	819	σ 0.2 ≥/MPa
Elongation	71	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	450～120	-
HRC	30	-

Physical Properties

Thermal expansion	16-75	e-6/K
Thermal conductivity	86-40	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5994-5139	째C
Density	9352-7214	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)
Pyromet 31 Stainless 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