Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Savoy Piping Inc. supplies ASTM A312 TP304 seamless pipe — the standard 18/8 austenitic grade for general corrosive service, food/pharma hygiene, and fabrication-friendly piping.
Grade hub · A312 Seamless · A312 Welded · A213 · A269 · A358 EFW · SS hub · A312 Welded twin
Also see: Stainless steel pipe & tube hub · Seamless pipe · Buttweld fittings · Flanges.
304 pipe to A312/SA312 for general corrosive service. Strength guide: min tensile ~515 MPa (75 ksi), min yield ~205 MPa (30 ksi) for common A312 pipe grades — confirm PO / ASME SA-312.
Choose 304 for general corrosion resistance and formability. Prefer 304L for heavy welded sections; 304H when elevated-temperature carbon is required; move to 316/316L for chloride / marine exposure.
| Choose | When | Watch-outs |
|---|---|---|
| 304 | General corrosion, food/utility, formable fabrication | Prefer 304L for heavy as-welded sections |
| 304L | Welded process lines; lower carbon reduces sensitization risk | Lower high-temp strength than 304H |
| 316L | Chlorides / chemical process needing Mo | Step to duplex/904L if PREN is still short |
ASTM A312 / ASME SA312 TP304 seamless pipe NPS / OD: ____ Schedule / wall: ____ Length: ____ Qty: ____ Ends: PE / BE MTC: EN 10204 3.1 / 3.2 Extras: PMI / IGC / hydro / NDE / dual-cert ____ Destination: ____
Email to sales@savoypipinginc.com with destination and any IBR / NACE / TPI notes.
| ASTM A312 TP304 Stainless Steel Seamless Pipes Specification | ASTM A312 / ASME SA312 (pipe). Tube twins: A213 / A269 when ordered as tube |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Grades | ASTM A312 / ASME SA312 TP304 (UNS S30400). Dual-cert 304/304L only when MTC supports both |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Type | Seamless (this page) — welded / ERW / EFW on twin pages when the PO allows |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Outer Diameter Size | Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Ends | Plain Ends / Beveled Ends |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment / Annealed / Bright Annealed |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| ASTM A312 TP304 Stainless Steel Seamless Pipes Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
The chemical composition of grade 304 Stainless Steel is outlined in the following table
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 304 | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.08 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 11.0 | 0.10 | ||
| 304L | min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.035 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||
| 304H | min. | 0.04 | - | - | - | - | 18.0 | - | 8.0 | - |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 11.0 | |||
The Mechanical Properties of grade 304 Stainless Steel are displayed in the following table.
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
Physical properties of 304 grade stainless steel in the annealed condition
Grade |
Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Grade specifications for 304 grade stainless steel
| 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 |
| 304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | 2352 | SUS 304L |
| 304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 | - | - |
| 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. | |||||||
The nominal diameter of 304 stainless steel seamless pipe ranges from ½ inch to 16 inches, ERW pipe ranges from ½ inch to 24 inches and EFW pipe ranges from 6 inches to 100 inches. All tube sizes range from 1/8 inch to 30 inches. 304 stainless steel welded pipe is welded from a single piece of metal or a narrow strip. Seamless, welded, or LSAW pipes come in different shapes from round, square, rectangular, and hydraulic types.
| Nominal Pipe Size | Outside Diameter | Schedule 5 S | Schedule 10 S | Schedule 20 S | Schedule 40 S | Schedule 80 S | Schedule 160 S | XXS | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | mm | WT mm | WEIGHT (KGM) | WT mm | WEIGHT (KGM) | WT mm | WEIGHT (KGM) | WT mm | WEIGHT (KGM) | WT mm | WEIGHT (KGM) | WT mm | WEIGHT (KGM) | WT mm | WEIGHT (KGM) |
| 3 | 1/8 | 10.3 | 1.2 | 0.20 | 1.24 | 0.28 | 1.5 | 0.33 | 1.73 | 0.37 | 2.41 | 0.47 | - | - | - | - |
| 6 | 1/4 | 13.7 | 1.2 | 0.37 | 1.65 | 0.49 | 2.00 | 0.58 | 2.24 | 0.630 | 3.02 | 0.80 | - | - | - | - |
| 10 | 3/8 | 17.1 | 1.2 | 0.47 | 1.65 | 0.63 | 2.00 | 0.74 | 2.31 | 0.840 | 3.20 | 1.10 | - | - | - | - |
| 15 | 1/2 | 21.3 | 1.65 | 0.80 | 2.11 | 1.00 | 2.30 | 1.07 | 2.77 | 1.27 | 3.73 | 1.62 | 4.75 | 1.94 | 7.47 | 2.55 |
| 20 | 3/4 | 26.7 | 1.65 | 1.03 | 2.11 | 1.28 | 2.55 | 1.52 | 2.87 | 1.69 | 3.91 | 2.20 | 5.56 | 2.9 | 7.82 | 3.64 |
| 25 | 1 | 33.4 | 1.65 | 1.30 | 2.77 | 2.09 | 2.55 | 1.94 | 3.38 | 2.50 | 4.55 | 3.24 | 6.35 | 4.24 | 9.09 | 5.4 |
| 32 | 1.1/4 | 42.2 | 1.65 | 1.65 | 2.77 | 2.70 | 3.00 | 2.9 | 3.56 | 3.39 | 4.85 | 4.47 | 6.35 | 5.61 | 9.70 | 7.77 |
| 40 | 1.1/2 | 48.3 | 1.65 | 1.91 | 2.77 | 3.11 | 3.00 | 3.55 | 3.68 | 4.05 | 5.08 | 5.41 | 7.14 | 7.25 | 11.1 | 10.18 |
| 50 | 2 | 60.3 | 1.65 | 2.40 | 2.77 | 3.93 | 3.00 | 4.24 | 3.91 | 5.44 | 5.54 | 7.48 | 8.74 | 11.11 | 11.07 | 13.44 |
| 65 | 2.1/2 | 73.0 | 2.11 | 3.69 | 3.05 | 5.26 | 4.00 | 6.81 | 5.16 | 8.63 | 7.01 | 11.41 | 9.53 | 14.91 | 14.02 | 20.39 |
| 80 | 3 | 88.9 | 2.11 | 4.51 | 3.05 | 6.4 | 4.00 | 8.37 | 5.49 | 11.29 | 7.62 | 15.27 | 11.1 | 21.30 | 15.24 | 27.68 |
| 100 | 4 | 114.3 | 2.11 | 5.84 | 3.05 | 8.36 | 4.50 | 12.18 | 6.02 | 16.07 | 8.56 | 22.32 | 13.49 | 33.54 | 17.12 | 41.03 |
| 125 | 5 | 141.3 | 2.77 | 9.47 | 3.40 | 11.57 | 5.00 | 16.80 | 6.55 | 21.8 | 9.53 | 30.97 | 15.88 | 49.11 | 19.05 | 57.43 |
| 150 | 6 | 168.3 | 2.77 | 11.32 | 3.40 | 13.84 | 6.35 | 25.36 | 7.11 | 28.26 | 10.97 | 42.56 | 18.25 | 67.53 | 21.95 | 79.22 |
| 200 | 8 | 219.1 | 2.77 | 14.79 | 3.76 | 19.96 | 6.35 | 33.31 | 8.18 | 42.55 | 12.7 | 64.64 | 23.01 | 111.27 | 22.23 | 107.92 |
| 250 | 10 | 273.1 | 3.40 | 22.63 | 4.19 | 27.78 | 6.35 | 41.77 | 9.27 | 60.31 | 12.7 | 96.01 | 28.58 | 172.33 | 25.40 | 155.15 |
| 300 | 12 | 323.8 | 3.96 | 31.25 | 4.57 | 36.00 | 6.35 | 49.7 | 9.53 | 73.88 | 12.7 | 132.05 | 33.32 | 238.76 | 25.40 | 186.97 |
| 350 | 14 | 355.6 | 3.96 | 34.36 | 4.78 | 41.3 | 7.92 | 67.80 | 11.13 | 94.59 | ||||||
| 400 | 16 | 406.4 | 4.19 | 41.56 | 4.78 | 47.29 | 7.92 | 77.83 | 12.7 | 123.30 | ||||||
| 40 | 18 | 47.2 | 4.19 | 46.81 | 4.78 | 53.26 | 7.92 | 87.71 | 14.27 | 155.80 | ||||||
| 500 | 20 | 508.0 | 4.78 | 59.25 | 5.54 | 68.61 | 9.53 | 117.14 | 15.09 | 183.42 | ||||||
| 600 | 24 | 610.0s | 5.54s | 82.47 | 6.35 | 94.4 | 9.53 | 141.12 | 17.48 | 255.41 | ||||||
The grade 304 steel can be made into plates, sheets, and coils to be used in the following:
A312 TP304 is austenitic stainless seamless pipe, UNS S30400, for corrosive and high-temperature service as specified.
This page is the seamless product form. Welded/ERW is listed on the twin page when the PO allows.
18Cr-8Ni (approx. 18–20% Cr, 8–10.5% Ni)
EN 10204 3.1 MTC standard; 3.2 and TPI on request.
We supply this product for domestic and export projects with mill test certificates (EN 10204 3.1 standard; 3.2 / TPI on request). Include destination, preferred Incoterms and any inspection body on the RFQ.