Technical Data
📌 Chemical & Mechanical Composition of Stainless Steel
Stainless steels are iron-based alloys containing a minimum of 10.5% chromium, which provides corrosion resistance. The chemical composition of each grade determines its mechanical properties, corrosion resistance, and suitability for specific applications.
Below is the detailed chemical composition of various stainless steel grades:
📊 Chemical Composition of Stainless Steel Grades
| Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | N (Max) | Cu / Others |
|---|---|---|---|---|---|---|---|---|---|---|
| 301 | 0.15 | 2.00 | 0.045 | 0.030 | 1.00 | 16.00–18.00 | 6.00–8.00 | – | 0.10 | – |
| 304 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00–20.00 | 8.00–10.50 | – | 0.10 | – |
| 304L | 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00–20.00 | 8.00–12.00 | – | 0.10 | – |
| 310S | 0.08 | 2.00 | 0.045 | 0.030 | 1.50 | 24.00–26.00 | 19.00–22.00 | – | – | – |
| 316 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.00–18.00 | 10.00–14.00 | 2.00–3.00 | 0.10 | – |
| 316L | 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 16.00–18.00 | 10.00–14.00 | 2.00–3.00 | 0.10 | – |
| 317 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00–20.00 | 11.00–14.00 | 3.00–4.00 | 0.10 | – |
| 317L | 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00–20.00 | 11.00–15.00 | 3.00–4.00 | 0.10 | – |
| 321 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 17.00–19.00 | 9.00–12.00 | – | 0.10 | Ti = 5 × (C + N) min or 0.70 max |
| 347 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 17.00–19.00 | 9.00–13.00 | – | – | Cb = 10 × (C min) or 1.00 max |
| 409 | 0.08 | 1.00 | 0.040 | 0.010 | 1.00 | 10.50–11.75 | 0.50 max | – | – | Ti = 6 × (C + N) min or 0.70 max |
| 409M | 0.03 | 0.8–1.2 | 0.030 | 0.40–0.75 | – | 11.00–12.00 | 1.5 max | – | – | Ti = 6 × (C) min or 0.70 max |
| 410S | 0.08 | 1.00 | 0.040 | 0.030 | 1.00 | 11.50–13.50 | 0.60 max | – | – | – |
| 410 | 0.15 | 1.00 | 0.040 | 0.030 | 1.00 | 11.50–13.50 | 0.75 max | – | – | – |
| 420 | 0.35 | 0.50 | 0.035 | 0.015 | 0.50 | 12.00–13.00 | 0.20–0.30 | – | – | – |
| 430 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 16.00–18.00 | 0.75 max | – | – | – |
| JSL AUS | 0.08 | 7.0–8.0 | 0.070 | 0.030 | 0.75 | 15.50–16.50 | 4.25–4.75 | – | – | 0.90–1.10 |
| JS-203 | 0.08 | 9.25–10.25 | 0.070 | 0.030 | 0.75 | 14.25–15.25 | 2.25–2.75 | – | – | 1.60–2.00 |
| 301M | 0.10 | 4.5–5.5 | 0.060 | 0.030 | 0.75 | 14.50–15.50 | 6.0–7.0 | – | – | 1.70–1.90 |
⚙️ Mechanical Properties (Overview)
Tensile Strength: Varies by grade, typically 500–900 MPa
Yield Strength: 200–450 MPa depending on grade
Elongation: 35%–55% (in 50 mm)
Hardness: Ranges from 150–300 HB (Brinell Hardness)
📐 Additional Technical Sections
Buttweld Fittings Data
Forged Fittings Specifications
Flange Dimensions & Standards (ASME, ANSI, DIN)
Alloy Steel Pipe Data
Mild Steel Composition
Formula of Weight for Steel Products