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
| Choose | When | Watch-outs |
|---|---|---|
| A312 seamless pipe | Process piping NPS + schedule | State seamless vs welded |
| A213 / A269 tube | HX / instrument OD×wall | Do not mix pipe schedules casually |
| SS hub | Browse related grades | Confirm dual-cert on MTC |
321H stainless — form: A312 pipe / A213 tube / A269 tube Size: ____ Wall/Sch: ____ Qty: ____ MTC: 3.1/3.2 Destination: ____
Email sales@savoypipinginc.com with destination and any IBR / NACE / TPI notes.
Savoy Piping Inc. supplies 321H — H-grade titanium-stabilised austenitic for elevated-temperature strength plus stabilisation.
Grade hub · A312 Seamless · A312 Welded · A213 · A269 · A358 EFW · SS hub
Also see: Stainless steel pipe & tube hub · Buttweld fittings · Flanges · Materials hub.
321H (UNS S32109): Ti-stabilised 321 with H-grade carbon. Mechanical guide: per SA-312 TP321H — confirm PO.
Only when 321H is named. Pair with correct filler / heat treatment notes on the WPS.
321H vs 347H: Ti vs Nb stabiliser preference by plant standard.
| 321H Stainless Steel Pipe & Tubes Specification | ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312 |
| 321H Stainless Steel Pipe & Tubes Grades | 321H pipe & tube forms (A312 / A213 / A269 / A358 as ordered) |
| 321H Stainless Steel Pipe & Tubes Type | Seamless Pipe / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| 321H Stainless Steel Pipe & Tubes Outer Diameter Size | Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| 321H Stainless Steel Pipe & Tubes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| 321H Stainless Steel Pipe & Tubes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| 321H Stainless Steel Pipe & Tubes Ends | Plain Ends / Beveled Ends |
| 321H Stainless Steel Pipe & Tubes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw |
| 321H Stainless Steel Pipe & Tubes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivate |
| 321H Stainless Steel Pipe & Tubes 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 |
| 321H Stainless Steel Pipe & Tubes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards includingASTM And ASME |
| 321H Stainless Steel Pipe & Tubes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| 321H Stainless Steel Pipe & Tubes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| 321H Stainless Steel Pipe & Tubes 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 |
| 321H Stainless Steel Pipe & Tubes Material Test Certificate | Stainless Steel Pipe Manufacturers 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 321H Stainless Steel is outlined in the following tableTypical compositional ranges for grade 321 Stainless steels Pipes
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 321 | min. max |
- 0.08 |
2.00 | 1.00 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 12.0 |
0.10 | Ti=5(C+N) 0.70 |
| 321H | min. max |
0.04 0.10 |
2.00 | 1.00 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 12.0 |
- | Ti=4(C+N) 0.70 |
The Mechanical Properties of grade Stainless Steel 321H 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 | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| 321H | 515 | 205 | 40 | 95 | 217 |
| 321H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
Physical properties of 321H 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 | |||||
| 321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
Grade Specifications for 321H grade stainless steel
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 321 | S32100 | 321S31 | 58B, 58C | 1.441 | X6CrNiTi18-10 | 2337 | SUS 321 |
| 321H | S32109 | 321S51 | - | 1.4878 | X10CrNiTi18-10 | - | SUS 321H |
| 347 | S34700 | 347S31 | 58G | 1.450 | X6CrNiNb18-10 | 2338 | SUS 347 |
| 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. | |||||||
321H (UNS S32109) is H-grade titanium-stabilised austenitic for elevated-temperature strength plus stabilisation. Chemistry: Ti-stabilised 321 with H-grade carbon.
Pipe A312 / A358 EFW; tube A213 / A269 (and A249 welded where specified).
per SA-312 TP321H — confirm PO
321H vs 347H: Ti vs Nb stabiliser preference by plant standard.
We supply this product for domestic and export projects with MTC (EN 10204 3.1 standard; 3.2 / TPI on request). Include destination, Incoterms and inspection needs on the RFQ.