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A 959 Type 634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 959 Type 634

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SAE A 959 Type 634

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This page is mainly introduced the A 959 Type 634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 959 Type 634,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

Steel Garde:A 959 Type 634
Type:Stainless Steels
Country:USA
Standard:SAE
Standard Number:

ITEM Standard Number Descriptions

1 A 959 (2011) Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Metallographic Structure:Precipitation-Hardening
Application:Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

ITEM	Standard Number	Descriptions
1	A 959 (2011)	Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 564 S35500	SAE	USA
A 693 S35500	SAE	USA
A 705 S35500	SAE	USA
S35500	AISI	USA
SA-564 S35500	AMS	USA
SA-693 S35500	AMS	USA
SA-705 S35500	AMS	USA
A 564 S35500	SAE	USA
A 693 S35500	SAE	USA
A 705 S35500	SAE	USA
S35500	AISI	USA
SA-564 S35500	AMS	USA
SA-693 S35500	AMS	USA
SA-705 S35500	AMS	USA
A 564 634	SAE	USA
A 693 Type 634	SAE	USA
A 705 634	SAE	USA
AISI634	AISI	USA
ASTM634	ASTM	USA
S35500	UNS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.10	0.15
Mn	0.50	1.25
Si		0.50
P		0.04
S		0.03
Cr	15.00	16.00
Ni	4.00	5.00
Mo	2.50	3.25
N	0.07	0.13

Mechanical Properties

Tensile strength	388～324	σb/MPa
Yield Strength	378	σ 0.2 ≥/MPa
Elongation	96	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	668～237	-
HRC	30	-

Physical Properties

Thermal expansion	01-78	e-6/K
Thermal conductivity	96-75	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9537-5881	째C
Density	9054-4366	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)
A 959 Type 634 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