317L Spiral Wound Gaskets
Item No.:ZD-G1202/317
Description: 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 |
|
0.03 |
2.00 |
0.75 |
18 ~ 20 |
11 ~ 15 |
|
Molybdenum |
Phosphorus |
Sulfur |
Nitrogen |
Iron |
|
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 % |
Hardness, Max |
|
205 |
515 |
40 |
217 BHN |
Physical
Properties:
Density: 8.0 g/cm3
Melting Range: 1320 ~ 1400
oC
