Sep 26 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications
Introduction
Stainless steels are high-alloy steels. These steels are available
in four groups that include martensitic, austenitic, ferritic and
precipitation-hardened steels.
Stainless steels contain larger amounts of chromium in comparison
with other steels and thus have good corrosion resistance. Most of the
stainless steels contain about 10% of chromium.
The following datasheet provides an overview of grade 301 full hard
stainless steel.
Chemical Composition
The chemical composition of grade 301 full hard stainless steel is
outlined in the following table.
| Element |
Content
(%) |
| Iron, Fe |
73 |
| Chromium, Cr |
16.0-18.0 |
| Nickel, Ni |
6.0-8.0 |
| Manganese, Mn |
2.0 |
| Silicon, Si |
0.75 |
| Carbon, C |
0.15 |
| Nitrogen, N |
0.10 |
| Phosphorous, P |
0.045 |
| Sulfur, S |
0.030 |
Physical Properties
The following table shows the physical properties of grade 301 full
hard stainless steel.
| Properties |
Metric |
Imperial |
| Density |
8.03 g/cm3 |
0.290 lb/in³ |
Mechanical Properties
The mechanical properties of grade 301 full hard stainless steel are
displayed in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
1276 MPa |
185100 psi |
| Yield strength (@strain 0.200 %) |
965 MPa |
140000 psi |
| Compressive yield strength
(longitudinal) |
793 MPa |
115000 psi |
| Fatigue strength (endurance limit;
test details not reported) |
552 MPa |
80100 psi |
| Elongation at break (in 2" (50 mm)) |
9.00% |
9.00% |
| Charpy impact |
150 J |
111 ft-lb |
| Hardness, Brinell |
382 |
382 |
| Hardness, Rockwell C |
41 |
41 |
Thermal Properties
The thermal properties of grade 301 full hard stainless steel are
given in the following table.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient
(@20-100°C/68-212°F) |
16.6 µm/m°C |
9.22 µin/in°F |
| Thermal conductivity (@100°C/212°F) |
16.3 W/mK |
113 BTU in/hr.ft².°F |
Other Designations
Equivalent materials to grade 301 full hard stainless steel include
AMS 5519.
Applications
Grade 301 full hard stainless steel is used in the following
applications:
- wheel covers
- roof draining systems
- conveyor belts
- automobile molding and trim
- subway and railway cars
- springs, hose clamps,
- trailer and truck bodies
- kitchen equipment