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SS 301
Type 301 (S30100) is an austenitic stainless steel with a nominal composition of 17% chromium and 7% 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. 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 various applications.
Specification
ASTM: A167, A177, A554, A666 UNS: S30100 AMS: 5901
Chemical Composition, %
| |
Cr |
Mn |
Si |
Ni |
P |
S |
C |
N |
| MIN |
16.00 |
-- |
-- |
6.00 |
-- |
-- |
-- |
-- |
| MAX |
18.00 |
2.00 |
1.00 |
8.00 |
0.045 |
0.030 |
0.15 |
0.10 |
For more details click the PDF here
- Resistance to Corrosion: Type 301 is resistant to a variety of corrosive media. However, the corrosion properties are not as good as the 18-8 chromium-nickel steels. Its susceptibility to carbide precipitation during welding restricts its use in many applications in favour of Types 304 or 304L.
- Resistance to Oxidation: Type 301 possesses good resistance to oxidation at temperatures up to 1550°F (840°C). At 1600°F (871°C) it exhibits an oxidation weight gain of 10mg/cm² in 1,000 hours. Therefore, this stainless steel is not suggested for use at 1600°F or above.
Features
- Provides good strength and ductility when cold worked
- Has excellent corrosion resistance
- Well suited to welding and forming and drawing
- Attractive surface
Applications
- Aircraft Structural Parts
- Trailer Bodies
- Architectural (roof drainage/door frames, etc.)
- Auto body trim wheel covers
- Utensils and tableware
Physical Properties
- Melting Range: 2550-2590°F (1399-1421°C)
- Specific Gravity: 0.285 lb/in³
- Density: 0.285 lb/in³
- Modulus of Elasticity in Tension: 28 x 106 psi (193 GPa)
For more details click the PDF here with all regulations here
Linear Coefficient of Thermal Expansion
| Temperature Range |
Coefficients |
| °C |
°F |
cm/cm .°C |
in/in/°F |
| 20 -100 |
62 - 212 |
16.6 x 106 |
9.2 x 106 |
| 50 - 300 |
68 - 572 |
17.6 x 106 |
9.8 x 106 |
| 20 - 500 |
68 - 932 |
18.6 x 106 |
10.3 x 106 |
| 20 - 700 |
68 - 1292 |
19.5 x 106 |
10.8 x 106 |
| 20 -871 |
68 - 1600 |
19.8 x 106 |
11.0 x 106 |
Thermal Conductivity
| Temperature Range |
| °C |
°F |
Microhm-cm |
Microhm-in |
| 20-100 |
62-212 |
16.3 |
9.4 |
| 20-100 |
62-932 |
21.4 |
12.4 |
Electrical Resistivity (Annealed Condition)
| Temperature Range |
| °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 |
Specific Heat
| Temperature Range |
| °C |
°F |
J/Kg°K |
Btu/lb/°K |
| 0-100 |
32-212 |
500 |
0.12 |
Mechanical Properties
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, ASTM A240 and A666 Specifications
| Tensile Strenght, Min |
0.2% Yield Strenght, 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 |
(1,034) |
110 |
(758) |
18* |
| 3/4 Hared |
175 |
(1,207) |
135 |
(931) |
12* |
| Full hard |
185 |
(1,276) |
140 |
(965) |
9* |
For more details click the PDF SS 301 here and with all regulations here
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