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303 Pb chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 303 Pb

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UNS 303 Pb

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This page is mainly introduced the 303 Pb chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 303 Pb,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr - 9Ni - 0.21Pb (303Pb) Free-Machining, Solution Heat Treated

Steel Garde:303 Pb
Type:Stainless Steels
Country:USA
Standard:UNS

Standard Number:

ITEM	Standard Number	Descriptions
1	SAE AMS 5635F (2006)	Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr - 9Ni - 0.21Pb (303Pb) Free-Machining, Solution Heat Treated
2	SAE J 405 (1998)	Chemical compositions of SAE wrought stainless steels

Metallographic Structure:Austenite
Application:Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr - 9Ni - 0.21Pb (303Pb) Free-Machining, Solution Heat Treated

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
303Pb	ASTM	USA
XM-3	SAE	USA
S30360	AISI	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.15
Si		1.00
Mn		2.00
P		0.04
S	0.12	0.25
Cr	17.0	19.0
Ni	8.00	10.0
Mo		0.60
Pb	0.12	0.30

Mechanical Properties

Tensile strength	818～521	σb/MPa
Yield Strength	925	σ 0.2 ≥/MPa
Elongation	28	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	705～066	-
HRC	30	-

Physical Properties

Thermal expansion	25-07	e-6/K
Thermal conductivity	73-38	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6741-7185	째C
Density	1149-1934	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)
303 Pb 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