Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A269/A296M-15 TP304/TP304L Stainless Steel Seamless Tube for Heat Exchanger and Boiler
ASTM A312 Tp304l Stainless Steel Pipe is one of the most widely used steel pipes in the world for many reasons. The ASTM A312 Gr Tp304l is cheaper than most other stainless steel products and therefore is cost effective. It is an austenitic stainless steel and has chromium content in it. This makes the ASTM A312 Grade Tp304l corrosion resistant. This quality is desired in most applications. The A312 Tp304l Pipe can be produced in different methods and it could come in different shapes as well.
Specifications: ASTM A/ASME SA213/A249/A269/A312/A358 Pipes and Tubes Sizes (Seamless): 1/2" NB - 16" NB
Pipes and Tubes Sizes (ERW): 1/2" NB - 24" NB
Pipes and Tubes Sizes (EFW): 6" NB - 100" NB
Pipes and Tubes Wall Thickness available: Schedule 5S - Schedule XXS (heavier on request)
Pipe and Tubes Other Materials Testing: NACE MR0175, H2 SERVICE, OXYGEN SERVICE, CRYO SERVICE, etc.
Dimensions: All Pipe is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc.
A269 TP304 Stainless Steel Seamless Tube Chemical Composition
| SS | 304 | 304N | 304LN |
| Ni | 8 – 11 | 8 – 11 | 8 – 11 |
| Fe | Balance | ||
| Cr | 18 – 20 | 18 – 20 | 18 – 20 |
| C | 0.08 max | 0.08 max | 0.035 max |
| Si | 0.75 max | 0.75 max | 0.75 max |
| Mn | 2 max | 2 max | 2 max |
| P | 0.040 max | 0.040 max | 0.040 max |
| S | 0.030 max | 0.030 max | 0.030 max |
| N | 0.10 – 0.16 | 0.10 – 0.16 | |
A269 TP304 Stainless Steel Seamless Tube Mechanical Properties
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35% |
A269 TP304 Stainless Steel Seamless Tube Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 304/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Equivalent Grade
| GRADE | UNS NO | OLD BRITISH | EURONORM | SWEDISH SS | JAPANESE JIS | ||
| BS | EN | NO | NAME | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
Diameter Tolerance ASTM A269 TP304 Tube
| NPS | ASTM A269 TP304 Tube OD Tolerance | |||
| + | – | |||
| inch | mm | inch | mm | |
| 1/8~1 1 /2 | 1/64(0.015) | 0.4 | 1/32(0.031) | 0.8 |
| > 1 1 /2~4 | 1/32(0.031) | 0.8 | 1/32(0.031) | 0.8 |
| > 4~8 | 1/16(0.062) | 1.6 | 1/32(0.031) | 0.8 |
| > 8~18 | 3/32(0.093) | 2.4 | 1/32(0.031) | 0.8 |
| > 18~26 | 1/8(0.125) | 3.2 | 1/32(0.031) | 0.8 |
| > 26~34 | 5/32(0.156) | 4 | 1/32(0.031) | 0.8 |
| > 34~48 | 3/16(0.187) | 4.8 | 1/32(0.031) | 0.8 |
Wall Thickness Tolerance ASTM A269 TP304 Tube
| NPS | ASTM A269 TP304 Tube Tolerance, % | |
| + | – | |
| 1/8-2 1 /2 | 20 | 12.5 |
| 3~18, t/D≤ 5% | 22.5 | 12.5 |
| 3~18, t/D> 5% | 15 | 12.5 |
| ≥ 20, welded | 17.5 | 12.5 |
| ≥ 20, seamless, t/D≤ 5% | 22.5 | 12.5 |
| ≥ 20, seamless, t/D> 5% | 15 | 12.5 |
A269 TP304 Stainless Steel Seamless Tube Advantages
Application
