Allegheny Ludlum Stainless Steel Type 301, 1/4 Hard (UNS S30100)

Subcategory: Ferrous Metal; Metal; Stainless Steel; T 300 Series Stainless Steel

Key Words: ASTM A240; ASTM A666

Component    Wt. % C Max 0.15   Cr 16 - 18   Fe 75

Component    Wt. % Mn Max 2   N Max 0.1   Ni 6 - 8

Component    Wt. % P Max 0.045   S Max 0.03   Si Max 0.75

Material Notes:
Iron content above calculated as balance.

Allegheny Ludlum Type 301 is a high strength grade of steel available in six conditions or tempers, its resistance to atmosphere corrosion and its bright, attractive surface make it an excellent choice for decorative structural applications.

Applications include automobile molding and trim, wheel cover, conveyor belts, kitchen equipment, roof draining systems, hose clamps, springs, truck and trailer bodies, railway and subway cars. 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.

Information provided by Allegheny Ludlum Corporation.

Physical Properties	Metric	English	Comments
Density	8.03 g/cc	0.29 lb/in³
Mechanical Properties
Hardness, Brinell	255	255
Hardness, Rockwell C	25	25
Tensile Strength, Ultimate	Min 862 MPa	Min 125000 psi
Tensile Strength, Yield	Min 517 MPa	Min 75000 psi	0.2% offset
Elongation at Break	Min 25 %	Min 25 %	in 2" (50 mm)
Modulus of Elasticity	193 GPa	28000 ksi	as rolled longitudinal
Modulus of Elasticity	197 GPa	28600 ksi	as rolled transverse
Compressive Yield Strength	345 MPa	50000 psi	longitudinal
Compressive Yield Strength	627 MPa	90900 psi	transverse
Charpy Impact	150 J	111 ft-lb	at 23°C; 150 J at -73°; 150 J at 196°
Fatigue Strength	303 MPa	43900 psi	endurance limit; test details not reported
Electrical Properties
Electrical Resistivity	7.2e-005 ohm-cm	7.2e-005 ohm-cm
Magnetic Permeability	Max 1.02	Max 1.02	typically < 1.02 at 200H; increases with cold work.
Thermal Properties
CTE, linear 20°C	16.6 µm/m-°C	9.22 µin/in-°F	Range 20° - 100°C
CTE, linear 250°C	17.6 µm/m-°C	9.78 µin/in-°F	Range 20° - 300°C
CTE, linear 500°C	18.6 µm/m-°C	10.3 µin/in-°F	Range 20°- 500°C; 19.5 µm/m-°C Range 20° - 700°C
Specific Heat Capacity	0.5 J/g-°C	0.12 BTU/lb-°F	between 0° -100° C
Thermal Conductivity	16.3 W/m-K	113 BTU-in/hr-ft²-°F	at 100°C; 21.4 W/m*K at 500°C
Melting Point	1399 - 1421 °C	2550 - 2590 °F
Solidus	1399 °C	2550 °F
Liquidus	1421 °C	2590 °F