As with alloy 316, the chemistry of low carbon stainless steel contains chromium, nickel, and molybdenum. An austenitic alloy belonging to the 300 series, the 317L Stainless Steel Seamless Tubes are considered to be a modification over grade 316. The content of molybdenum in this alloy’s chemistry is higher than 3%. This modified molybdenum grade alloy has several important characteristics. For instance, the WERKSTOFF NR.1.4438 Heat exchanger Tube demonstrates greater resistance to pitting and crevice corrosion compared to alloy 316.
Since this alloy contains both chromium and molybdenum the resistance of the Stainless Steel 317L Seamless Tube towards corrosive agents such as chlorides or sulphur containing environments remains one of the most sought after qualities. Just as many low carbon alloys in the 300 series, the ASTM A213 TP 317L Instrumentation Tubes have nitrogen added in their chemistry. Nitrogen is added to such alloys to increase the austenite stability of the alloy. Just like the addition of molybdenum in the SS 317L Cold Rolled Coiled Tubing material, the addition of nitrogen makes it resistant to pitting. One of the risks of lowering the content of carbon in an alloy is that the material tends to lose its tensile strength.
However, when nitrogen is added to low carbon austenitic alloys like ASTM A249 TP 317 Welded Tube, the yield strength gets a boost. Though some of the mechanical properties of the alloy see a decline, the weldability of the UNS S31703 U Tube is on the rise as there are no free carbon atoms that precipitate. Carbide precipitates generally cause hindrance in conventional stainless steels, unlike the SS 317L Welded Tubing.
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Standard |
ASTM, AISI, GB, JIS, customers' requests available |
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Size |
Round Tube: OD: 16-119mm or customized |
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Thickness |
0.25mm-3.0mm |
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Length |
6m or according to customers' request |
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Sample |
Free sample is available, but freight should be paid by you |
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Tolerance
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Outer diameter: ±0.2mm |
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Thickness: ±0.05mm |
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Length: ±0.5mm |
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Ends |
In plain end or bevelled ends or as your requirements |
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Welding Line Type |
ERW (Electrical Resistance Weld) |
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Finishing
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A. Sanded |
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B. Gloss #400,Mirror #600 - #1000 |
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C. Brushed |
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D. Wood Grain |
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E. Embossed, Threaded |
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Application |
Decorations, constructions, food industry, etc. |
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Certification |
ISO, SGS |
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Round Pipe Size |
16, 17, 18, 19, 20, 21, 22, 23, 25, 28, 31.8, 35, 36, 38.1, 48, 50.8, 60, 63.5, 76.2, 89, 101, 114 mm |
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Square Pipe Size |
17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 30, 36, 38, 50 mm |
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Rectangle Pipe Size |
10*30, 10*40, 10*50, 20*10, 23*11, 24*12, 25*13, 28*25, 28*13, 29*14, 30*15, 30*20, 30*22, 34*22, 36*23, 50*25, 60*30, 75*45, 95*45 mm |
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Thickness |
exact 0.25, 0.28, 0.32, 0.37, 0.41, 0.51, 0.61, 0.71, 0.91, 1.11, 1.15, 1.41 mm |
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Length |
6m or according to customer’s request |
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Outer diameter |
6.35-219mm |
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Tolerance |
Outer diameter :±0.2mm |
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Thickness :±0.02mm |
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Length :±0.5mm |
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Process method |
Code drawn, annealed with nitrogen protection, ultrasonic, automatic shape, polished |
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Test |
Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
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Equipment |
Press machine, Bending machine, Pushing Machine, electric bevelling machine Sand-blasting machine, etc |
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Origin |
West Europe / Japanese / Indian / USA / Korean / American / European |
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Test Certificates |
Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report |
| Grade SA213 TP317L Capillary Tubing | Stainless Steel DIN 1.4438 Condenser Tubes |
| DIN 1.4438 Stainless Steel 317L Exhaust Tubing | Stainless Steel DIN 1.4438 Instrumentation tube |
| ASTM A 213 317L Stainless Steel Rectangular Tubing | ASME SA213 TP317L Hydraulic Tubing |
| SS TP 317L Bright annealed tube | SA 213 Gr 317L Coiled Tubing |
| Grade SA213 TP317L Cold Drawn Tubes | ASTM A213 TP 317L Mechanical Tube |
| Grade SA213 TP317L Extruded Seamless Tube | SS TP 317L Welded Rectangular Tube |
| SS UNS S31703 Seamless Annealed Tube | DIN 1.4438 Stainless Steel 317L Straight Tubing |
| Element | AISI 317L |
|---|---|
| Density | 8.0 g/cm3 |
| Melting Range | 1454 °C (2650 °F) |
| Tensile Stress | Psi - 75000 , MPa - 515 |
| Yield Stress (0.2%Offset) | Psi - 30000 , MPa - 205 |
| Elongation | 35 % |
| Hardness (Brinell) | - |
| SS 317L | Maximum |
|---|---|
| Ni | 11 - 15 |
| C | 0.035 Maximum |
| Mn | 2 Maximum |
| P | 0.040 Maximum |
| S | 0.03 Maximum |
| Si | 1 Maximum |
| Cr | 18 - 20 |
| Mo | 3 - 4 |
| N | - |
| STANDARD | WERKSTOFF NR. | UNS |
|---|---|---|
| SS 317L | 1.4438 | S31703 |
