Detailed Product Description
1. Alloy 317L inner and outer rings;
2. Filler: Graphite and PTFE;
3. Offers high creep,stress to rupture,tensile strength.
317L Spiral wound gaskets
317L is molybdenum-bearing austenitic stainless steels with greatly increased resistance to chemical attack as compared to the conventional chromium-nickel austenitic stainless steels such as SS304. 317L offers higher creep, stress-to-rupture, and tensile strengths at elevated temperatures than conventional stainless steels.
Composition:
Carbon |
Manganese |
Silicon |
Chromium |
Nickel |
Molybdenum |
Phosphorus |
Sulfur |
Nitrogen |
Iron |
0.03 |
2.00 |
0.75 |
18 ~ 20 |
11 ~ 15 |
3 ~ 4 |
0.04 |
0.03 |
0.1 |
Balance |
Resistance to Corrosion:
> 317L is more resistant to atmospheric and other mild types of corrosion than conventional chromium-nickel stainless steels;
> 317L is considerably more resistant than conventional chromium-nickel types to solutions of sulfuric acid;
> At the temperature under 38oC, Alloy 317L have excellent resistance to solution of higher concentration;
> 317L also provide superior resistance to intergranular attack.
> 317L is less susceptible than 316 and lower alloy stainless steel to pitting or crevice corrosion in acidic solutions containing chlorides or other halide ions.
Oxidation Resistance:
317L have excellent resistance to oxidation and a low rate of scaling in ordinary atmospheres at temperature up to 1600oC
Fabrication:
The physical and mechanical properties of 317L is similar to those of more conventional austenitic stainless steel and can , therefore, be fabricated in a manner similar to 304 and 316.
Mechanical Properties:
0.2% Yield Strength Mpa |
Ultimate Tensile Strength MPa |
Elongation |
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