Introduction
Stainless steels are known as high-alloy steels. They consist about 4-30% of chromium. They are classified into martensitic, austenitic, and ferritic steels based on their crystalline structure.
Grade 317 stainless steel is a modified version of 316 stainless steel. It has high strength and corrosion resistance. The following datasheet gives more details about grade 317 stainless steel.
Chemical Composition
The chemical composition of grade 317 stainless steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | 61 |
| Chromium, Cr | 19 |
| Nickel, Ni | 13 |
| Molybdenum, Mo | 3.50 |
| Manganese, Mn | 2 |
| Silicon, Si | 1 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
Physical Properties
The following table shows the physical properties of grade 317 stainless steel.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8 g/cm3 | 0.289 lb/in³ |
| Melting point | 1370°C | 2550°F |
Mechanical Properties
The mechanical properties of annealed grade 317 stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 620 MPa | 89900 psi |
| Yield strength | 275 MPa | 39900 psi |
| Elastic modulus | 193 GPa | 27993 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 45% | 45% |
| Hardness, Rockwell B | 85 | 85 |
Thermal Properties
The thermal properties of grade 317 stainless steel are given in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@ 0-100°C/32-212°F) | 16 µm/m°C | 8.89 µin/in°F |
| Thermal conductivity (@ 100°C/212°F) | 16.3 W/mK | 113 BTU in/hr.ft².°F |
Other Designations
Other designations equivalent to grade 317 stainless steel are included in the following table.
| ASTM A167 | ASTM A276 | ASTM A478 | ASTM A814 | ASME SA403 |
| ASTM A182 | ASTM A312 | ASTM A511 | QQ S763 | ASME SA409 |
| ASTM A213 | ASTM A314 | ASTM A554 | DIN 1.4449 | MIL-S-862 |
| ASTM A240 | ASTM A403 | ASTM A580 | ASME SA240 | SAE 30317 |
| ASTM A249 | ASTM A409 | ASTM A632 | ASME SA249 | SAE J405 (30317) |
| ASTM A269 | ASTM A473 | ASTM A813 | ASME SA312 |
Post time: May-06-2023