Small Diameter Stainless Steel Tubes Construction Building Material
| Product Name | ASTM A213 316Ti stainless steel seamless tube |
| Material | stainless steel 316Ti |
| Process | cold drawn, cold rolling |
| Standard | A213, A312, A269, A511 |
| Grade | 304, 304L, 316L, 321, 347H, S31803, 904L |
| Size | 6 - 610 mm |
| Length | 800mm - 20000 mm |
| Used | bolier, heat exchanger |
Tolerance for seamless stainless boiler tube:
| Production Method | Size(mm) | Tolerance |
| Hot Rolling(Extrusion) | OD | ≤140 | ±1.25% |
| ＞140 | ±1.0% |
| WT | ≤10 | ±12.5% |
| ＞10 | ±15% |
| Cold Drawn(Cold Rolled) | OD | 8~30 | ±0.20mm |
| ＞30~50 | ±0.30mm |
| ＞50 | ±0.8% |
| WT | 1.0~3 | +12% -10% |
| ＞3.0 | ±10% |
| Standard | ASME SA213/ASTM A213, ASTM A269/ASME SA269, ASME SA312/ASTM A312, ASME249/ASTM A249, ASME SA511/ASTM A511, ASTM A270/ASME SA270, EN10216-5,EN10305-1, EN10217-5, DIN 17175, DIN 2448, DIN 6258, GOST 8731, JIS G3463, JIS G3462, JIS G3455, JIS G3459 etc. |
| Material | TP304, TP304L, TP304H, TP304LN, TP314, TP316, TP316L, TP316LN, TP321, TP321H, TP310, TP310S, TP317, TP317L, TP347, TP347H, N08904, 904l, 253MA(S30815), 254SMO(S31254). |
| Type | Seamless / SML |
| O.D | 6-530mm |
| W.T | 0.7-50mm |
| Length | 0-38000mm |
| Technique | Cold Finished (Cold Drawing and Cold Rolling), Hot Finished (Hot Extrusion) |
| Ends | PE/Plain Ends, BE/Beveled Ends |
Composition
Composition ranges for grade 316 stainless steel.
| Grade |
| C | Mn | Si | P | S | Cr | Mo | Ni | N |
| 316 | Min | - | - | - | 0 | - | 16.0 | 2.00 | 10.0 | - |
| Max | 0.08 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | 0.10 |
| 316L | Min | - | - | - | - | - | 16.0 | 2.00 | 10.0 | - |
| Max | 0.03 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | 0.10 |
| 316H | Min | 0.04 | 0.04 | 0 | - | - | 16.0 | 2.00 | 10.0 | - |
| max | 0.10 | 0.10 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | - |
Mechanical Properties
Mechanical properties of grade 316 stainless steel.
| Grade | Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elong (% in 50 mm) min | Hardness |
| Rockwell B (HR B) max | Brinell (HB) max |
| 316 | 515 | 205 | 40 | 95 | 217 |
| 316L | 485 | 170 | 40 | 95 | 217 |
| 316H | 515 | 205 | 40 | 95 | 217 |
Physical Properties
Typical physical properties for grade 316 stainless steel.
| Grade | Density(kg/m3) | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100 °C (J/kg.K) | Elec Resistivity (nΩ.m) |
| 0-100 °C | 0-315 °C | 0-538 °C | At 100 °C | At 500 °C |
| 316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
Grade Specification Comparison
Grade specifications for grade 316 stainless steel.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS |
| BS | En | No | Name |
| 316 | S31600 | 316S31 | 58H, 58J | 1.4401 | X5CrNiMo17-12-2 | 2347 | SUS 316 |
| 316L | S31603 | 316S11 | - | 1.4404 | X2CrNiMo17-12-2 | 2348 | SUS 316L |
| 316H | S31609 | 316S51 | - | - | - |
Mechanical property
Heat treatment of longitudinal mechanical properties of steel pipe shall according to the standard.
| Material | Tensile strength MPa ≥ | Yield Strength MPa ≥ | Elongation % ≥ |
| 0Cr18Ni9 | 520 | 205 | 35 |
| 1Cr19Ni9 | 520 | 205 | 35 |
| 0Cr19Ni10 | 480 | 175 | 35 |
| 1Cr18Ni9Ti | 550 | 205 | 40 |
| 0Cr18Ni12Mo2Ti | 530 | 205 | 35 |
| 0Cr26Ni5Mo2 | 590 | 390 | 18 |
| 1Cr17 | 410 | 245 | 20 |
| 00Cr27Mo | 410 | 245 | 20 |
| 1Cr25Ti | 440 | 245 | 17 |
Hardness:
For the tubes which W.T. ≥2 mm, Rockwell hardness tests should be taken.
Tests of the seamless boiler tubes:
1.Bending Test:
The tubes should take the bending test when OD ≤22mm. The bending angle is 90 degrees, and the bending radius is 6 times the outer diameter of the steel tube.
2. Hydraulic test;
Eddy current testing, ultrasonic testing can be used instead of hydraulic tests. When eddy current testing, GB/T 7735-1995 Gr. A should be followed; when ultrasonic testing, GB/T 5777-1996 Gr. C8 should be followed.
3. Flattening test
4. Flanging test
5. Expand test
RFQ
How to get the sample?
1.You are requested to pay for sample charges and courier charges from China to your country; and the free sample is according the product like size, steel grade and quantity, please consult our sales for details
2.Sample charges will be refunded when order is placed.
What is your Payment Term?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation
Who are your customers?
1.Stockists, Distributors,Wholesalors,Agents, Traders, End Users, etc
How long will you react on our requirement?
1.Your requirement would be treated within 24 hours on weekdays. Quotations would be sent upon technical details confirmed by customer!
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