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A 29 4012 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 29 4012

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SAE A 29 4012

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This page is mainly introduced the A 29 4012 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 29 4012,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

Steel Garde:A 29 4012
Type:Stainless Steels
Country:USA
Standard:SAE
Standard Number:

ITEM Standard Number Descriptions

1 A 29/A 29M (2012) Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for
Metallographic Structure:Precipitation-Hardening
Application:Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

ITEM	Standard Number	Descriptions
1	A 29/A 29M (2012)	Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 176 S44735	SAE	USA
A 240 S44735	SAE	USA
A 268 S44735	SAE	USA
S44735	AISI	USA
SA-240 S44735	AMS	USA
SA-268 S44735	AMS	USA
A 176 S44800	SAE	USA
A 240 S44800	SAE	USA
A 268 S44800	SAE	USA
A 276 S44800	SAE	USA
A 479 S44800	SAE	USA
A 493 S44800	SAE	USA
A 580 S44800	SAE	USA
S44800	AISI	USA
SA-240 S44800	AMS	USA
SA-268 S44800	AMS	USA
SA-276 S44800	AMS	USA
SA-479 S44800	AMS	USA
A 268 29-4	SAE	USA
A 268 29-4-2	SAE	USA
A 29 4023	SAE	USA
A 29 4024	SAE	USA
A 29 4027	SAE	USA
A 29 4028	SAE	USA
A 29 4032	SAE	USA
A 29 4037	SAE	USA
A 29 4042	SAE	USA
A 29 4047	SAE	USA
A 29 40L12	SAE	USA
A 29 40L23	SAE	USA
A 29 40L24	SAE	USA
A 29 40L27	SAE	USA
A 29 40L28	SAE	USA
A 29 40L32	SAE	USA
A 29 40L37	SAE	USA
A 29 40L42	SAE	USA
A 29 40L47	SAE	USA
A 29 4118	SAE	USA
A 29 4120	SAE	USA
A 29 4121	SAE	USA
A 29 4130	SAE	USA
A 29 4135	SAE	USA
A 29 4137	SAE	USA
A 29 4140	SAE	USA
A 29 4142	SAE	USA
A 29 4145	SAE	USA
A 29 4147	SAE	USA
A 29 4150	SAE	USA
A 29 4161	SAE	USA
A 29 41L18	SAE	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.01
Si		0.20
Mn		0.30
P
S
Ni		0.15
Cr	28.00	30.00
Al
Cu		0.15
Ti
Fe
N		0.02
Mo	3.50	4.20

Mechanical Properties

Tensile strength	979～933	σb/MPa
Yield Strength	575	σ 0.2 ≥/MPa
Elongation	48	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	639～939	-
HRC	30	-

Physical Properties

Thermal expansion	44-46	e-6/K
Thermal conductivity	11-21	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3174-1221	째C
Density	2611-2220	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 29 4012 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