E309 Ss Wleding Rod
1. Chemical Composition (Mass Fraction, wt%) 2. Mechanical Properties (Room Temperature) 3. Physical Properties (309 Base Metal)
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Product Introduction
1. Chemical Composition (Mass Fraction, wt%)
| Category | C | Si | Mn | P | S | Cr | Ni | Mo | Remarks |
|---|---|---|---|---|---|---|---|---|---|
| E309-16 (AWS) | ≤0.15 | ≤1.00 | 0.5–2.50 | ≤0.040 | ≤0.030 | 22.0–25.0 | 12.0–14.0 | ≤0.75 | - |
| E309L-16 (AWS) | ≤0.04 | ≤1.00 | 0.5–2.50 | ≤0.040 | ≤0.030 | 22.0–25.0 | 12.0–14.0 | ≤0.75 | Low carbon for intergranular corrosion resistance |
| E309H-16 (AWS) | 0.04–0.08 | - | - | - | - | 24.0–25.0 | 12.0–14.0 | - | Higher high-temperature strength |
| ER309 (AWS) | ≤0.12 | 0.3–0.65 | 1.0–2.5 | ≤0.030 | ≤0.030 | 23.0–25.0 | 12.0–14.0 | ≤0.75 | For gas metal arc welding (GMAW) |
| ER309L (AWS) | ≈0.02 | ≈0.42 | ≈1.88 | ≤0.020 | ≤0.001 | ≈23.0 | ≈13.7 | ≤0.08 | Typical composition |
| 309 Base Metal (ASTM A167) | ≤0.20 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 22.0–24.0 | 12.0–15.0 | - | Austenitic stainless steel |
2. Mechanical Properties (Room Temperature)
| Category | Tensile Strength (Rm) | Yield Strength (Rp0.2) | Elongation (A) | Hardness | Remarks |
|---|---|---|---|---|---|
| E309-16 Deposited Metal | ≥550 MPa | - | ≥30% | - | As-welded condition |
| E309L-16 Deposited Metal | ≥520 MPa | - | ≥30% | - | As-welded condition |
| E309H-16 Deposited Metal | 552–593 MPa (80–86 ksi) | 462–490 MPa (67–71 ksi) | 38.2–41% | - | CO₂ shielded |
| ER309 Deposited Metal | ≈601 MPa (≈87.2 ksi) | ≈400 MPa (≈58.0 ksi) | ≈40% | - | Typical value |
| 309 Base Metal (Annealed) | ≥517 MPa (≥75 ksi) | ≥207 MPa (≥30 ksi) | ≥40% | ≤RB95 | Conforms to ASTM A167 |
3. Physical Properties (309 Base Metal)
| Item | Value | Unit | Remarks |
|---|---|---|---|
| Density | 8.00 | g/cm³ | - |
| Elastic Modulus | 200 | GPa | - |
| Coefficient of Thermal Expansion (20–100°C) | 14.9 | µm/m·K | - |
| Thermal Conductivity (20°C) | 15.6 | W/m·K | - |
| Melting Point | 1400–1455 | °C | - |
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