JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
WUXI DETA METAL PRODUCTS CO.,LTD
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ASTM EN DIN GB JIS Standard Stainless Steel Pipe 316L / 1.4404 / TP316L Stainless Seamless Tube
| TP316L Bright Annealed Tubing, 1/2inch Stainless Steel Tube | ||||||||||
| Outside Diameter | 3.2-25.4mm | |||||||||
| Wall Thickness | 0.2-2.5mm | |||||||||
| Length | As customer's requirement; In coil or in straight. | |||||||||
| Standard | ASTM A213/ ASME SA213, ASTM A269/ASME SA269, EN10216-5, etc. | |||||||||
| Grade | TP304, TP304L, TP316, TP316L, TP321, TP247H, etc. | |||||||||
| Delivery Condition | Pickled, Polished, Bright Annealed | |||||||||
| Technique | Seamless/Welded | |||||||||
| Application | Automotive industry, Aircraft/Aerospace, Instrumentation & Electrical, Chemical Industry, etc. | |||||||||
| Marking | LOGO, Standard, Grade, Size, Heat Number. | |||||||||
| Package | Woven bag, wooden cases, or as per customer's requirement. | |||||||||
| Quality Requirement | Mill Test Certificate (EN 10204/3.1); Third Part Inspection is acceptable. | |||||||||
Grades:
Type 304 | Type 304L | Type 304H | Type 309 | Type 310s | Type 316 | Type 316L | Type 316H | Type 316Ti | Type 317L | Type 321 | Type 321H | Type 347 | Type 347H | Type 410 | Type 904L |UNS S31803 | UNS S32750 | UNS S32760
ASTM A312 TP 316 / 316L Stainless Steel Pipes and Tubes is the low carbon version of 316 stainless. With the addition of molybdenum, the steel is popular for use in severe corrosion environments due to the materials immunity from boundary carbide precipitation (sensitisation). The material is widely used in heavy gauge welded components and weld annealing is only required where the material is for use in high stress environments. 316L has an extensive variety of uses especially in marine applications due to the materials high corrosion resistance.
316 & 316L steel plate and pipes have common properties and are often stocked with Dual Certification, where it is determined that both have properties and composition which comply with both steel types.
Type 316H is excluded from this scenario by virtue of the fact that unlike 316 & 316L, 316H is engineered to work in elevated working temperatures.
Wall Thickness available:
Schedule 5S - Schedule XXS (heavier on request)
Other Materials Testing:
NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.
Dimensions:
All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.
Background of 316L Stainless Steel Pipes and Tubes
Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics. It is readily brake or roll formed into a variety of parts for applications in the industrial, architectural, and transportation fields. Grade 316 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). Grade 316H, with its higher carbon content has application at elevated temperatures, as does stabilised grade 316Ti.
The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
Table 1. Composition ranges for 316 grade of stainless steels.
| 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 | - |
Table 2. Mechanical properties of 316 grade stainless steels.
| Grade | Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elong (% in 50mm) 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 |
Note: 316H also has a requirement for a grain size of ASTM no. 7 or coarser.
Table 3. Typical physical properties for 316 grade stainless steels.
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Co-eff of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Elec Resistivity (nΩ.m) | |||
| 0-1000C | 0-3150C | 0-5380C | At 1000C | At 5000C | |||||
| 316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
Table 4. Grade specifications for 316 grade stainless steels.
| 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 | - | - | - | - | - |
Note: These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.
Corrosion Resistance of 316L Stainless Steel Pipes and Tubes excellent in a range of atmospheric environments and many corrosive media - generally more resistant than 304. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 600C. Considered resistant to potable water with up to about 1000mg/L chlorides at ambient temperatures, reducing to about 500mg/L at 600C.
316 is usually regarded as the standard ہ"marine grade stainless steel", but it is not resistant to warm sea water. In many marine environments 316 does exhibit surface corrosion, usually visible as brown staining. This is particularly associated with crevices and rough surface finish.
Heat Treatment of ASTM A312 TP 316 / 316L Stainless Steel Seamless Pipes and Tubes
Solution Treatment (Annealing) - Heat to 1010-11200C and cool rapidly. These grades cannot be hardened by thermal treatment.
ASTM A312 TP 316 / 316L Stainless Steel Seamless Pipes and Tubes is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation. SS 316L ASTM A312 Seamless Pipe packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage.
Delivery: Within 10-25 days or asap if we have enough stock
