309S 310S 321 stainless steel coils
Product Description
Stainless steels are a family of iron based alloys that contain a minimum of 10.5% chromium (CR). The presence of chromium creates an invisible surface film that resists oxidation and makes the material passive or corrosion resistant (stainless). There are multiple families of stainless steel which are designed for various applications and uses. Stainless grades can be further modified to meet various processing, corrosion, temperature and strength conditions.
309 STAINLESS STEEL
Type 309 (UNS S30900)
Description
Type 309 is a high temperature chromium nickel austenitic stainless steel that resists oxidation at temperatures up to 1900˚F in dry air at constant temperature. Under thermal cycling conditions this grade resists oxidation up to a temperature of approximately 1850˚F. Type 309 has good sulfidation resistance but low resistance to carburization and should not be used in highly carburizing atmospheres. Type 309 is non-magnetic in the annealed and cold worked conditions and is as resistant to corrosion as Type 304/304L.
Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A167*
| Element |
309 |
| Carbon |
0.20 |
| Chromium |
22.0-24.0 |
| Nickel |
12.0-15.0 |
| Manganese |
2.00 |
| Silicon |
0.75 |
| Phosphorus |
0.045 |
| Sulfur |
0.030 |
* Maximum, unless range is indicated
Mechanical Properties
Mechanical property requirements for annealed product as specified in ASTM A167.
| Property |
309 |
| Yield Strength, min. (ksi) |
30 |
| Tensile Strength, min. (ksi) |
75 |
| Elongation, min. (%) |
40 |
| Hardness, max. (Rb) |
95 |
Physical Properties
Physical properties for Type 309 stainless steel
| Property |
309 |
| Density, lb/in3 |
0.285 |
| Modulus of Elasticity, psi |
29.0 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F |
8.7 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F |
9.0 |
| Specific Heat, Btu/lb ˚F |
0.12 |
| Electrical Resistivity, Microohm-in |
30.7 |
Features
- Corrosion Resistance: 309 stainless stands-up excellently in a range of atmospheric environments even when exposed to corrosive elements.
- Heat Resistance: Can be hot worked at 1177C and then can be quenched rapidly.
- Easy to weld by using fusion or resistance welding methods (preferably not oxyacetylene though).
- Can be headed, upset, drawn, and stamped even though it has high work hardening rate.
Description
Type 310S is a high temperature chromium nickel austenitic stainless steel with high creep strength that resists oxidation at temperatures up to 2000˚F in dry air. Type 310S forms a tenacious scale at high temperature and is resistant to spalling and performs better than Type 309 in thermal cycling applications. Type 310 has good sulfidation resistance and good resistance to carburization in moderately carburizing atmospheres. Type 310S is the low carbon version of Type 310 and is utilized for ease of fabrication due to its better formability and weldability. Type 310S is non-magnetic in the annealed and cold worked conditions and is as resistant to corrosion as Type 304/304L.
Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A240 and ASME SA240*.
| Element |
310S |
| Carbon |
0.08 |
| Chromium |
24.0-26.0 |
| Nickel |
19.0-22.0 |
| Manganese |
2.00 |
| Silicon |
1.50 |
| Phosphorus |
0.045 |
| Sulfur |
0.030 |
* Maximum, unless range is indicated
Mechanical Properties
Mechanical property requirements for annealed product as specified in ASTM A240 and ASME SA240.
| Property |
310S |
| Yield Strength, min. (ksi) |
30 |
| Tensile Strength, min. (ksi) |
75 |
| Elongation, min. (%) |
40 |
| Hardness, max. (Rb) |
95 |
Physical Properties
Physical properties for Type 310S stainless steel
| Property |
310S |
| Density, lb/in3 |
0.290 |
| Modulus of Elasticity, psi |
29.0 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F |
8.8 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F |
8.0 |
| Specific Heat, Btu/lb ˚F |
0.12 |
| Electrical Resistivity, Microohm-in |
30.7 |
Features
Good resistance to thermal fatigue and intermittent heating at high temperatures.
Good aqueous corrosion resistance due to high chromium content
Excellent resistance to an oxidizing and carburizing atmosphere.
Resists nitric acid fuming at normal temperature and fused nitrates to temperatures upwards of 425 degrees Celsius.
Applications
Versatile and useful in many areas, 310 Stainless Steel is often found in furnace parts, heat exchangers, welding filler wire, oil burner parts, and general heat treatment.
Applications
The 309 can be applied to a range of applications including a variety of accessories and equipment such as boiler baffles, furnace components, oven linings, fire box sheets, and other high temperature containers.
Stainless steel 304/304L Grade :
Type 304/304L is the modern version of "18-8" stainless steel containing approximately 18% chromium and 8% nickel and is the most commonly specified stainless steel used throughout the world. Type 304/304L is a versatile, general purpose stainless steel with good resistance to atmospheric corrosion, and to many chemicals and food and beverages. These grades can be specified in the annealed condition where they have very good formability. Higher nickel versions can be specified to enhance multi-stage deep drawing characteristics. Higher strength, cold-worked conditions can also be specified for Type 304/304L for spring type applications. Type 304/304L is non-magnetic in the annealed condition but may become slightly magnetic as a result of cold working.
Type 304L can be dual certified as 304 when the composition meets the lower carbon limit of 304L and the slightly higher strength levels of 304. Type 304L should be specified for welded applications as the low carbon version eliminates chromium carbide precipitation and enhances the corrosion resistance in the as-welded condition.
Another common material Stainless steel 316/316L Grade :
Alloy 316/316L is molybdenum-bearing austenitic stainless steel. The higher nickel and molybdenum content in this grade allows it to demonstrate better overall corrosion resistant properties than 304, especially with regard to pitting and crevice corrosion in chloride environments. In addition, Alloy 316/ 316L provides excellent elevated temperature tensile, creep and stress-rupture strengths, as well as outstanding formability and weldability. 316L is the lower carbon version of 316 and is immune from sensitization; therefore, it is very frequently used in heavy gauge welded components.
Specifications: UNS S31600 / S31603
Chemical Composition&Mechanical Properties
Chemical Composition (wt%) limits as specified in ASTM A240 and ASME SA240*
Mechanical property requirements for annealed product as specified in ASTM A240 and ASME SA240
Other common Specification for stainless steel sheet
AISI316L SUS316L 1.4404 TP316L 2B cold rolled stainless steel coil
| Item |
Description |
| Standard |
ASTM A240 / AISI / DIN / JIS / GB |
Grade |
201/202 |
| 304/304L/304H/309S/310S/316L/316Ti/317L/321//S31803/S32205/904L |
| 409L/410S/420J1/J2/430 439 441 444 446 |
| Thickness |
0.3-6.0mm for cold sheet scope; 3.0-100mm for hot rolled scope |
| Width&Length |
1000mm/1219mm/1500mm/1800mm/2000mm |
| Length from cutting, as requirement |
| Surface |
Mill surface: 2B/BA/No.1 |
| Processing surface: 8k mirror/Hairline/No.4 Satin/Bead blast/Color etched |
| Protection |
Transparent film/ Blue fulm/PVC film or laser film |
| Package |
Standard export package with metal pallet + angle bar protection + |
| Processing |
Edging/Laser(Plasma/Water Jet) cutting/Leveling/Slitting |
Products Show
309S 310S 321 stainless steel coils
Other Common Surface finished Mirror, Golden mirror, Hairline, Bead Blast etc.
309S 310S 321 stainless steel coils
309S 310S 321 stainless steel coils
309S 310S 321 stainless steel coils
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