JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
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Full Round Bar 316L UREA Grade 1.4435 Ø275mm According The SAIPEM SPC_ON-SECTION-EXE-ENG_MAT-524-E Rev.1
The UREA 316L grade has been specially developed for urea plant applications. It is a 316L modified stainless steel with extra – low silicon content and substantial higher molybdenum contents. The low carbon content, combined with a well balanced chemistry (low silicon and nickel content close to 14%) makes the alloy fully austenitic, free of intermetallic phase precipitations. The ferrite level is kept under 0.5% in the solution annealing and water quenched conditions. The UREA 316L grade is designed for the fabrication of lining interiors in urea units for improved corrosion resistance properties in urea – carbonate environments or complementary products (pipes, fittings…). The alloy is not designed for nitric acid application.
| Tensile strength: | 500-700 | N/mm² |
| Yield strength 0,2% : | 200 | ≥ N/mm² |
| Elongation: | 40/30 | ≥ % |
| Hardness HB30: | 215 | ≤ HB |
| 1.4435 (316LMo) Chemical Composition | ||||||||
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo |
| 1.4435 (316LMo) | %0.03 max | %2.0 max | %0.045 max | %0.015 max | %1.0 max | %17 - 19 | %12.5 - 15 | %2.5 - 3.5 |
at 1120 – 1180°C (2048 – 2156°F) followed by water quenching.
Typical maximum corrosion results required following different specifications after Huey tests (ASTM A262 C – five periods of 48 h.) are:
All material will be marked as follow:
Material will be delivered with certificate EN 10204 3.1
