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HS 556 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HS 556

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ASTM HS 556

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This page is mainly introduced the HS 556 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of HS 556,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Iron Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05La - 0.20N Solution Heat Treated

Steel Garde:HS 556
Type:Stainless Steels
Country:USA
Standard:ASTM

Standard Number:

ITEM	Standard Number	Descriptions
1	SAE AMS 5877B (2002)	Iron Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05La - 0.20N Solution Heat Treated

Metallographic Structure:Precipitation-Hardening
Application:Iron Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05La - 0.20N Solution Heat Treated

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
HS-21	UNS	USA
HS-31	UNS	USA
HS 556	ASTM	USA
HS 556	ASTM	USA
HS 556	UNS	USA
HS 556	UNS	USA
HS 556	UNS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.05	0.15
Si	0.20	0.80
Mn	0.50	2.00
Ni	19.00	22.50
Cr	21.00	23.00
Al	0.10	0.50
Cu
Ti
Fe		remaining
Mo	2.50	4.00
Co	16.00	21.00
W	2.00	3.50

Mechanical Properties

Tensile strength	575～526	σb/MPa
Yield Strength	186	σ 0.2 ≥/MPa
Elongation	98	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	128～452	-
HRC	30	-

Physical Properties

Thermal expansion	26-01	e-6/K
Thermal conductivity	96-35	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3487-0612	째C
Density	5347-0937	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)
HS 556 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