ASTM A269/270/213 TP304 GRADE SS SMLS TUBE
Introduction
A standard austenitic stainless steel under ASTM A269, widely used for seamless and welded tubing in general corrosion-resistant applications. It contains 18–20% Cr and 8–11% Ni, offering balanced mechanical properties and formability
Key Features
Corrosion Resistance: Resists oxidation and organic acids but may suffer from intergranular corrosion in welded areas due to carbide precipitation
High-Temperature Stability: Maintains strength up to 870°C, suitable for moderate heat environments.
Applications: Fluid/gas transfer, heat exchangers, and industrial piping systems.
Why Choose TP304 Stainless Steel Tube?
Superior Corrosion Resistance: TP304 resists oxidation, organic acids, and mild corrosive environments, making it ideal for applications exposed to moisture, chemicals, or saline atmospheres. Its chromium content forms a passive oxide layer that self-repairs when damaged.
High-Temperature Stability: Withstanding temperatures up to 870°C (1600°F) intermittently, TP304 is suitable for heat exchangers, exhaust systems, and industrial furnaces.
Mechanical Strength and Ductility: The alloy maintains excellent tensile strength and elongation even at cryogenic temperatures, ensuring reliability under mechanical stress or thermal cycling.
Ease of Fabrication: TP304’ s outstanding formability and weldability (via TIG, MIG, or laser welding) allow for seamless integration into complex designs without sacrificing performance.
Hygienic and Aesthetic Appeal: Its smooth surface inhibits bacterial growth, critical for food, pharmaceutical, and medical industries. Additionally, its polished finish is visually appealing for architectural uses.
Cost-Effectiveness: Compared to higher-grade alloys like TP316, TP304 offers a budget-friendly solution for applications where extreme chloride resistance is not required.
Compliance with Standards: TP304 tube meets international specifications (e.g., ASTM A269, A213) and is NSF-certified for potable water systems, ensuring quality and safety.
Material Specification
Standard: ASTM A269&A270&A213
O.D: 1/8" NB TO 32" NB , (10.29MM-812.80MM) ,(Customization Available)
W.T: SCH 10S, SCH 40S, SCH 80S, SCH160, SCH XXS (Customization Available)
Application: Heat Exchangers and Boilers
Food and Beverage Processing
Petrochemical and Energy Sectors
Architectural and Decorative Uses
Food & Dairy Plants
Pharmaceutical Plant
End: Plain End, Beveled End, Threaded
Processing: Cut-to-length;Polishing.
Inspection:
100% PMI TESTED
EN10204.3.1B MILL TEST CERTIFICATE
THIRD PARTY INSPECTION ACCEPTED
Delivery Condition: Cold Drawn, Annealed and Pickled/ Polished /Bright Annealed/ Sand blasting/ Shot Blasting.
Marking: All SS SMLS Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or as per the customer’s request)
Packing: Packed in Wooden Boxes, plywood cases, Steel Strips Bundled, or as per Customers Requests
Specials: Sizes and Specifications other than above can be customized on request.
Specification parameters
A269/270/213 TP304 chemical composition
|
HEAT NO. |
CHEMICAL COMPOSITION (%) |
|||||||
|
C |
Mn |
P |
S |
Si |
Ni |
Cr |
||
|
STAND. |
MIN. |
8.00 |
18.00 |
|||||
|
MAX. |
0.080 |
2.00 |
0.045 |
0.030 |
1.00 |
11.00 |
20.00 |
|
A269/270/213 TP304 Mechanical Properties
|
Mechanical Properties |
|||||
|
Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness MAX |
|
|
Rockwell (HRB) |
Brinell (HBW) |
||||
|
ATSM A269 TP304 |
90 |
192 |
|||
|
ATSM A213 TP304 |
515 |
205 |
35 |
90 |
192 |
|
ATSM A270 TP304 |
515 |
205 |
35 |
B90 |
|
Equivalent Grades - (ASTM A269&A270&A213 TP304 Equivalent Grades)
| ASTM A269/270/213 TP304 Equivalent Grades | ||||||||||||
| USA (ASTM / AISI) | Germany (DIN, WNr) | Japan (JIS) | France (AFNOR) | England (BS) | Euronorms (EN) | Italy (UNI) | Spain (UNE) | China (GB) | Sweden (SS) | Poland (PN) | Czech Republic (CSN) | Austria (ONORM) |
| 304 304H S30400 | 1.4301 1.5301 X5CrNi18-10 X5CrNi18-9 X6CrNi18-9 | SUS304 | 304F00 X5CN18-10 Z4CN19-10FF Z5CN17-08 Z6CN18-09 Z7CN18-09 | 304S11 304S15 304S16 304S16 304S17 304S18 304S25 304S31 | 1.4301 1.4948 X5CrNi18-10 X6CrNi18-10 | X3CrNi18-10 X5CrNi18-10 | F.3504 F3551 X5CrNi18-10 | 0Cr19Ni9 0Cr18Ni9 | 2332 2333 | 0H18N9 | 17240 | X5CrNi18-10OS |
ASTM A269/A269M & ASTM A270/A270M Standard Cold Machining Size Deviation Permitted
| ASTM A269/A269M Standard cold machining size deviation permitted | ||||||
| Group | Size,Outside Diameter,in. [mm] | Permissible Variations in Outside Diameter, in. [mm] | Permissible Variations in Wall Thickness,A % | Permissible Variations in Cut Length, in. [mm]B | Thin Walled TubesC | |
| Over | Under | |||||
| 1 | Up to 1/2 [13] | ±0.005[0.13] | ±15 | 1/8[3.2] | 0 | ... |
| 2 | 1/2 to 1 1/2 [13 to 38], excl | ±0.005[0.13] | ±10 | 1/8[3.2] | 0 | less than 0.065in. [1.65mm]nominal |
| 3 | 1 1/2 to 3 1/2 [38 to 89], excl | ±0.010[0.25] | ±10 | 3/16[4.8] | 0 | less than 0.095 in. [2.41 mm]nomina |
| 4 | 3 1/2 to 5 1/2 [89 to 140], excl | ±0.015[0.38] | ±10 | 3/16[4.8] | 0 | less than 0.150 in. [3.81 mm]nominal |
| 5 | 5 1/2 to 8 [140 to 203], excl | ±0.030[0.76] | ±10 | 3/16[4.8] | 0 | less than 0.150 in. [3.81 mm]nominal |
| 6 | 8 to 12 [203 to 305], excl | ±0.040[1.01] | ±10 | 3/16[4.8] | 0 | less than 0.200 in. [5.08 mm]nominal |
| 7 | 12 to 14 [305 to 356], excl | ±0.050[1.26] | ±10 | 3/16[4.8] | 0 | less than 0.220 in. [5.59 mm]nominal |
| ASTM A270/A270M Standard cold machining size deviation permitted | ||||
| Size,Outside Diameter, in.[mm] | Permissible Variations in Outside Diameter,in.[mm] | Permissible Variations in Cut Length,in.[mm] A | ||
| Over | Under | Over | Under | |
| 1.000[25] and under | 0.005 [0.13] | 0.005[0.13] | 1/8 [3] | 0 |
| Over 1 [25] to 2 [50] | 0.008 [020] | 0.008 [0.20] | 1/8 [3] | 0 |
| Over 2 [50] to 3 [75] | 0.010 [0.25] | 0.010 [0.25] | 1/8 [3] | 0 |
| Over 3 [75] to 4 [100] | 0.015 [0.38] | 0.015 [0.38] | 1/8 [3] | 0 |
| Over 4[100]to 5 1/2 [140], excl | 0.015 [0.38] | 0.015 [0.38] | 3/16 [5] | 0 |
| 5 1/2 [140]to 8 [200], exdl | 0.030 [0.75] | 0.030 [0.75] | 3/16 [5] | 0 |
| 8 [200] to 12 [300] | 0.050 [1.25] | 0.050 [1.25] | 3/16 [5] | 0 |