What is 317L stainless steel?
Alloy 317L (UNS S31703) is a molybdenum-bearing austenitic stainless steel with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as Alloy 304.
317L Stainless Steel Equivalent Grade
| AISI 317L | ASTM A167 | ASTM A182 | ASTM A213 | ASTM A240 |
| ASTM A249 | ASTM A312 | ASTM A774 | ASTM A778 | ASTM A813 |
| ASTM A814 | DIN 1.4438 | QQ S763 | ASME SA240 | SAE 30317L |
Chemical Composition
The chemical composition of grade 317L stainless steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | Balance |
| Chromium, Cr | 18-20 |
| Nickel, Ni | 11-15 |
| Molybdenum, Mo | 3-4 |
| Manganese, Mn | 2 |
| Silicon, Si | 1 |
| Phosphorous, P | 0.045 |
| Carbon, C | 0.03 |
| Sulfur, S | 0.03 |
Mechanical Properties
The mechanical properties of grade 317L stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 595 MPa | 86300 psi |
| Yield strength | 260 MPa | 37700 psi |
| Modulus of elasticity | 200 GPa | 29000 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 55% | 55% |
| Hardness, Rockwell B | 85 | 85 |
What is the difference between SS 317 and 317L?
Stainless Steel 317L is the low-carbon derivative of SS 317. The metal maintains its high strength and strong corrosion resistance; however, the carbon content does have several effects. 317L has greater strength under welding; its products are stronger.
What is the difference between 316L and 317L stainless steel?
SS 317L elements have more corrosion resistance than 316L SS. 317L stainless steel is better to perform in high temperature environments and with aggressive chemicals. 317L SS has a heat resistance up to 950°C (1742°F) than 316L SS. It is ideal for nuclear power plants and chemical processing machinery.
who choose us?
If you have a project need for 317L (1.4438) stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. We process these products into a variety of practical product forms, including sheet, coil, tube, bar, and wire. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.es@gescosteel.com