ASTM A312 TP310S Stainless Steel Seamless Pipe
ASTM A312 TP310S is an austenitic stainless steel grade used for high temperature service in pressure piping systems. Pipes manufactured according to ASTM A312 or ASME SA312 are widely used in industries where resistance to oxidation, corrosion and high temperature exposure is required.
TP310S stainless steel is a low-carbon version of grade 310, designed to improve weldability and reduce the risk of carbide precipitation during fabrication. The alloy contains a high percentage of chromium and nickel, which provides excellent resistance to oxidation and sulfidation in elevated temperature environments.
ASTM A312 TP310S seamless pipes are commonly used in furnace components, heat treatment equipment, petrochemical plants, power generation systems and other high temperature industrial applications.
Chemical Composition
| ASTM A312 | Si | P | C | Mn | S | Cr | Mo | Ni | N | |
| 310s |
min. | – | – | – | – | – | 24.0 | – | 19.0 | – |
| max. | 1.50 | 0.045 | 0.25 | 2.0 | 0.030 | 26.0 | 22.0 | – | ||
The chemical composition of TP310S stainless steel is controlled to provide high temperature strength and corrosion resistance.
Mechanical Properties
ASTM A312 TP310S stainless steel pipes must meet the following minimum mechanical property requirements.
| SUS | Tensile Strength minimum (MPa) | Yield Strength 0.2% Proof minimum (MPa) | Elongation minimum (% in 50mm) | Hardness | |
| Rockwell B (HR B) maximum | Brinell (HB) maximum | ||||
| 310S | 515 | 205 | 40 | 95 | 217 |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.98 g/cm³ |
| Melting Point | 1398 – 1454 °C |
TP310S stainless steel exhibits excellent resistance to thermal fatigue and oxidation in high temperature service.
Manufacturing Standard
ASTM A312 covers seamless, welded and heavily cold-worked austenitic stainless steel pipes intended for high temperature and general corrosion resistant service.
Related standards include:
-
ASTM A312 – Stainless Steel Pipe
-
ASME SA312 – Pressure piping specification
-
ASTM A213 – Stainless steel heat exchanger tubes
Heat Treatment
All ASTM A312 TP310S pipes must be supplied in the heat-treated condition.
Typical heat treatment requirement:
Rapid cooling by water quenching or air cooling
Heat treatment ensures proper microstructure and corrosion resistance.
Testing Requirements
Pipes manufactured according to ASTM A312 are subject to several inspection and testing procedures.
Chemical Analysis
Verification of chemical composition to ensure compliance with the TP310S specification.
Tensile Test
Mechanical testing is conducted to confirm tensile strength, yield strength and elongation.
Hydrostatic Test
Each pipe is subjected to hydrostatic pressure testing to confirm pressure integrity.
Non-Destructive Electric Test
As an alternative to hydrostatic testing, pipes may be inspected using non-destructive electric methods such as ultrasonic testing.
Pipe Size Range
ASTM A312 TP310S stainless steel seamless pipes are commonly supplied in the following size ranges:
Wall Thickness: SCH 5S – SCH XXS
Pipe Length: 6 m – 12 m
Dimensions typically follow ASME B36.19 stainless steel pipe standards.
Applications
ASTM A312 TP310S stainless steel pipes are widely used in high temperature environments, including:
-
furnace components
-
heat treatment equipment
-
petrochemical processing plants
-
combustion chambers
-
thermal process equipment
The material provides excellent oxidation resistance up to approximately 1100°C under mild cyclic conditions.
Equivalent Grades
These equivalent grades offer similar corrosion resistance and high temperature performance.
Equivalent Grades for Stainless Steel TP310S Pipe and Tube
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 310S | S31008 | 310S16 | – | 1.4845 | X8CrNi25-21 | 2361 | SUS 310S |
A312 TP310S Pipe Permitted Variations in Outside Diameter
| NPS Designator | Permissible Variations in Outside Diameter | DN Designator | Permissible Variations in Outside Diameter | ||
| Over in. |
Under in. |
Over [mm] |
Under [mm] |
||
| ⅛ – 1½, incl | 1⁄64 (0.015) | 1⁄32 (0.031) | [6–40], incl | [0.4] | [0.8] |
| Over 1½ to 4, incl | 1⁄32 (0.031) | 1⁄32 (0.031) | Over [40 to 100] | [0.8] | [0.8] |
| Over 4 to 8, incl | 1⁄16 (0.062) | 1⁄32 (0.031) | Over [100 to 200] | [1.6] | [0.8] |
| Over 8 to 18, incl | 3⁄32 (0.093) | 1⁄32 (0.031) | Over [200 to 450] | [2.4] | [0.8] |
| Over 18 to 26, incl | ⅛ (0.125) | 1⁄32 (0.031) | Over [450 to 650] | [3.2] | [0.8] |
| Over 26 to 34, incl | 5⁄32 (0.156) | 1⁄32 (0.031) | Over [650 to 850] | [4.0] | [0.8] |
| Over 34 to 48, incl | 3⁄16 (0.187) | 1⁄32 (0.031) | Over [850 to 1200] | [4.8] | [0.8] |
ASTM A312 TP310S stainless steel seamless pipes provide excellent oxidation resistance and mechanical stability in high temperature industrial environments. With high chromium and nickel content, the material is widely used in furnace equipment, petrochemical plants and other applications requiring reliable performance at elevated temperatures.
How to order our A312 TP310S Pipes?
A312 TP310S Seamless stainless steel pipes,6in Sch80S,Bevelled end ,6000mm length, Qty:150 pcs
- 1/2″ NB/3/4″ NB /1″ NB/1-1/4″ /2″ /2-1/2/3″ NB/3-1/2″/4″ NB/5″ NB/6″ NB/8″ NB /10″ NB /12″ NB
- in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
- Material :ASTM A312 TP310S
- End:Plain End,Bevelled End
Download ASTM A312 TP310S Seamless Stainless Steel Pipe specification
