JFE434LN2
<Composition> 19Cr - 2Mo - Nb - ultra-low (C, N) (SUS436L)）
comparison of corrosion resistance
Weldability
Corrosion resistance
- The corrosion resistance of the steel is as good as SUS316
Applications
Solar collector plates, warm water tanks, etc.
Chemical composition
| Steel grade | C | Si | Mn | P | S | Ni | Cr | Mo | Nb/C+N | |
|---|---|---|---|---|---|---|---|---|---|---|
| JFE434LN2 | Std. | ≦ 0.015 | ≦ 1.00 | ≦ 1.00 | ≦ 0.040 | ≦ 0.030 | ≦ 0.60 | 17.00 - 20.00 | 1.75 - 2.50 | ≧ 8 |
| Typical values | 0.004 | 0.10 | 0.30 | 0.035 | 0.005 | 0.25 | 18.00 | 1.80 | 30 |
Mechanical properties
(Thickness: 1.0 mm, 2B finish, L direction, [except C direction for SUS304 only])
| Steel grade | 0.2％Yield strength （N/mm²） |
Tensile strength （N/mm²） |
Elongation (%) |
Hardness (Hv 5 kg) |
Bendability (Bending angle 180°) |
|---|---|---|---|---|---|
| JFE434LN2 | 333 | 500 | 31 | 175 | Good (r = 0t) |
| SUS430 | 304 | 490 | 31 | 160 | Good (r = 1t) |
| SUS304 | 255 | 637 | 58 | 160 | Good (r = 0t) |
Formability
(Thickness: 1.0 mm, 2B finish)
| Steel grade | Erichsen value (mm) |
△r | n value | Conical cup value (mm) |
Bulging height (mm) | |
|---|---|---|---|---|---|---|
| JFE434LN2 | 8.8 | 1.08 | 0.18 | 0.21 | 46.6 | 33.0 |
| SUS430 | 9.4 | 1.10 | 0.30 | 0.21 | 48.5 | - |
| SUS304 | 13.0 | 1.00 | −0.30 | 0.48 | 45.9 | - |
Corrosion resistance
| Steel grade | Item | Rusting onset test | |
|---|---|---|---|
| Test conditions | Salt spray testNo. of rust points after 4 hours/100cm² | CASS test 16 hours×3 cycles | |
| JFE434LN2 | 0 | Slight rusting onset | |
| SUS430 | 0 - 3 | Rusting onset | |
| SUS304 | 0 | Slight rusting onset | |
| SUS316 | 0 | Slight rusting onset | |
The rust resistance of JFE434LN1 is similar to those of SUS316 and SUS304 as shown the table.