Mahaveer Steel, a prominent greatest maker, and supplier of Stainless Steel 321 and 321H buttweld fittings, is a principal 18/8 austenitic steel fertilizer of titanium. We are a confirmed and endorsed association to convey, import, and toll these tempered steel fittings. Grade 321 is incredibly impenetrable to opening, pitting, and oxidizing utilization.
Both SS grades are the best choices in the temperature approaches 900℃ and show high inflexibility and yielding strength. Level 321H change of level 321 with wide carbon content to give robustness against high temperature and diminishing conditions. Grade 321 has wonderful forming and welding features. SS 321/321H buttweld fittings grades of treated steel give eminent strength, down to cryogenic temperature, and high robustness. We offer a wide extent of customization according to the client's requirements. We moreover oversee emergency organizations.
They have a couple of utilizations. Some are analyzed underneath, used in augmentation joints, warmer parts, warming segment tubing, heat exchangers, winding welded tube, burner lines, and lines. They are proper across various organizations and power age, compound endeavors, paper, and crush undertakings, oil and gas endeavors, directing and tubing adventures, and such, like others.
Specification : ASTM A403 / ASME SA403
Dimension Standard : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
ASME B16.9 : standard for – Factory-Made Wrought Buttwelding Fittings
ASME B16.25 : Buttwelding Ends
ASME B16.28 : standard for – Butt-Welded Short Radius Elbows & Returns Bends
MSS SP-43 : Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
Size Range : ½" NB to 24" NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100)
Seamless Butt Weld Fitting Size : 1/2" - 10"
Welded Butt Weld Fittings Size : 1/2" - 48"
Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Type : Seamless / Welded / Fabricated
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
| Nominal Pipe Size | All Fittings | All Fittings | All Fittings | Elbows/ Tees | 180° Return Bends | 180° Return Bends | 180 Deg Return Bends | Reducers | Caps |
|---|---|---|---|---|---|---|---|---|---|
| NPS | O.D. at Bevel (1), (2) | I.D. at End (1), (3), (4) |
Wall Thickness (3) | Centre-to-End Dimension A,B,C,M | Centre-to-Centre O | Back-to-Face K | Alignment of Ends U | Overall Length H | Overall Length E |
| ½ to 2½ | 0.06 -0.03 |
0.03 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 3 to 3 ½ | 0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 4 | 0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 5 to 8 | 0.09 -0.06 |
0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.25 |
| 10 to 18 | 0.16 -0.12 |
0.12 | Not less than 87.5% of nominal thickness | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 20 to 24 | 0.25 -0.19 |
0.19 | Not less than 87.5% of nominal thickness | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 26 to 30 | 0.25 -0.19 |
0.19 | Not less than 87.5% of nominal thickness | 0.12 | … | … | … | 0.19 | 0.38 |
| 32 to 48 | 0.25 -0.19 |
0.19 | Not less than 87.5% of nominal thickness | 0.19 | … | … | … | 0.19 | 0.38 |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 - 12.00 | 5(C+N) – 0.70 max |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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