Hi-Tech Metal & Tubes is Dealer & Distributor of 321H Stainless Steel Seamless Pipes for NSSMC (Nippon Steel & Sumitomo Metal Corporation)and Kuze Stainless Steel.Dealer & distributor of Super Duplex and Duplex Stainless Pipes for Salzgitter Mannesmann
- Specifications –ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
- Size – Seamless 321H Pipes & Tubes – 1/2″ NB -24″ NB
- ERW 321H Pipes & Tubes – 1/2″ NB – 24″ NB
- EFW 321H Pipes & Tubes – 6″ NB – 100″ NB
- Wall Thickness – Schedule 5S – Schedule XXS.
| Dimensions | : | ASTM, ASME and API |
| Schedule | : | SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS |
| Type | : | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
| Length | : | Single Random, Double Random & Cut Length. |
| Form | : | Round, Square, Rectangular, Hydraulic Etc. |
Composition ranges for stainless steel 321H grade
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
| 321H | min.max | 0.040.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.019.0 | – | 9.012.0 | – | Ti=4(C+N)0.70 |
Mechanical properties of stainless steel 321H grade
| 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 | ||||
| 321H | 515 | 205 | 40 | 95 | 217 |
321H also has a requirement for a grain size of ASTM No 7 or coarser.
Grade specifications for stainless steel 321H grade
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 321H | S32109 | 321S51 | – | 1.4878 | X10CrNiTi18-10 | – | SUS 321H |
| STANDARD | UNS | WERKSTOFF NR. |
| SS 321H | S32109 | 1.4878 |