Stainless Steel 321 / 321H Pipes & Tubes
Introduction

Stainless Steel 321 / 321H Pipe Manufacturer, ASTM A321 TP Stainless Steel Pipes, SS 321 Pipe & Tube, Stainless Steel UNS S32109 Tubes Supplier & Exporter in India.
SS 321H Seamless Pipes & Tubes, Stainless Steel 14541 / 1.4878 Stainless Steel Pipe & Tube, Stainless Steel UNS S32100 Tubes & Pipes Exporter & Dealer in India.
Specification of Stainless Steel 321/321H Pipes & Tubes:
- Range: 6NB to 1200NB
- 321/321H Pipes & Tubes: 1/2″ NB – 24″ NB
- Thickness: 0.6 mm to 12.7 mm
- Schedules : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
- Length: Single Random, Double Random & Cut Length
- Specifications : ASTM A312 / ASTM SA312
- Types: Round, Square, Rectangle, Hydraulic, Honed Tubes
- End: Plain End, Beveled End
Stainless Steel Weld Neck Flanges Specifications
| Standards | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
| Size | 1/2″ NB TO 48″ NB |
| Designation | A 182 / A 240, SA 182 / SA 240 |
| Class | 150#, 300#, 400#, 600#, 900#, 1500# & 2500#. |
| Grade | ASTM A182 F304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L ETC. |
Chemical Composition of Stainless Steel 321/321H Pipes & Tubes:
| Grade | C | Mn | Si | P | S | Cr | N | Ni | TI | |
| 321 | Min | – | – | – | – | – | 17.0 | – | 9.00 | 5(C+N) |
| max | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 19.0 | 0.10 | 12.00 | 0.70 max |
Mechanical properties of Stainless Steel 321/321H Pipes & Tubes:
| 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 |
Physical properties of Stainless Steel 321/321H Pipes & Tubes:
| Grade | Density (kg/m3) | Elastic Modulus (GPA) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Elec 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 |
