General Information
Chemical Composition
Physical Properties
Mechanical Properties
General Information
Type 301 is an austenitic stainless steel with a nominal composition of 17 percent chromium and 7 percent nickel. The high strengths of this grade of steel in the six available conditions or tempers, its resistance to atmosphere corrosion and its bright, attractive surface make it an excellent choice for decorative structural applications. Automobile molding and trim, wheel covers, conveyor belts, kitchen equipment, roof drainage systems, hose clamps, springs, truck and trailer bodies, railway and subway cars are some of the major applications for this versatile grade. By varying the chemical composition within the limits set by the ASTM specifications and by temper rolling, a broad range of magnetic and mechanical properties can be obtained for a variety of applications. United Performance Metals also supplies 301 in its Full Hard, 1/2 Hard and 1/4 Hard conditions.

Standard Inventory Specifications

UNS S30100
AMS 5901
ASTM A 240
ASTM A 666
ASME SA 240
ASME SA 666

Common Trade Names

ATI 301 (™ Allegheny Technologies)

Common Applications of 301

Aircraft structural parts
Trailer bodies
Architectural (roof drainage/door frames, etc.)
Auto body trim and wheel covers
Utensils and tablewear
Conveyor parts

Chemical Composition

301 Chemical Composition

Element

Percent by Weight

C

Carbon

0.150 maximum

Mn

Manganese

2.000 maximum

P

Phosphorus

0.045 maximum

S

Sulfur

0.030 maximum

Si

Silicon

1.00 maximum

Cr

Chromium

16.00 – 18.00

Ni

Nickel

6.000 – 8.000

N

Nitrogen

0.10 maximum

Physical Properties

301 Physical Properties

Melting Range: 2250-2950°F (1399-1421°C)
Density: 0.2850 lb/in3 (7.88g/cm3)
Specific Gravity: 8.03
Modulus of Elasticity in Tension: 28·106 psi (193 GPa)

Linear Coefficient of Thermal Expansion
Temperature Range		Coefficients
°C	°F	cm/cm°C	in/in/°F
20-100	68-212	16.6·10-6	9.2·10-6
20-300	68-572	17.6·10-6	9.8·10-6
20-500	68-932	18.6·10-6	10.3·10-6
20-700	68-1292	19.5·10-6	10.8·10-6
20-871	68-1600	19.8·10-6	11.0·10-6

Thermal Conductivity
Temperature Range		Coefficients
°C	°F	W/m·K	Btu/(hr/ft²/hr/°F/ft)
20-100	68-212	16.30	9.40
20-500	68-932	21.40	12.4

Electric Resitivity
Temperature Range		J/kg°K	Btu/lb/°F
°C	°F
0-100	32-212	500	0.12

Magnetic Permeability

H/m Annealed
1.02 Max @ 200 H

Electric Resitivity
Temperature Range		microhm-cm	microhm-in
°C	°F	microhm-cm	microhm-in
20	68	72	28.3
100	212	78	30.7
200	392	86	33.8
400	752	100	39.4
600	1112	111	43.7
800	1472	121	47.6
900	1652	126	49.6

Mechanical Properties

Mechanical Properties and Yield Strength of 301

Type 301 is used in the annealed and cold rolled conditions. In the work-hardened condition, Type 301 develops higher tensile strength than the other stable austenitic grades. Minimum properties for plate, sheet and strip per ASTM A240 and A666 follow.
MINIMUM ROOM TEMPERATURE MECHANICAL
PROPERTIES PER, ASTM A240 AND A666 SPECIFICATIONS

Condition	Tensile Strength, Min.		0.2% Yield Strength, Min.		Elong. In 2″ (50mm)
Condition	Ksi	MPa	Ksi	MPa	%, Min.
Annealed	75	515	30	205	40
1/4 Hard	125	862	75	517	25
1/2 Hard	150	1034	110	758	8*
3/4 Hard	175	1207	135	931	12*
Full Hard	185	1276	740	965	9*

* Value shown for thickness greater than 0.015 in. (.038mm).

301 Pipes
301 Fittings
301 Bars
301 Sheets & Plates
301 Coils & Strips
301 Wires

301 Seamless Pipe
Standard: ASTM, JIS, DIN, EU…
Grade: 301…
Size: OD: Φ4-Φ1219mm; WT:…
Introduction: Wisine its production capacity of stainless steel seamless pipe, roughly 2100 tons per month. As per your requirement…