316L UG (UREA GRADE)
UREA GRADE 316L, EN-1.4435, UNS S31603
UREA GRADE 316L / 1.4435 Round Bar
The material UREA 316L grade (also known as 316L modified) has been created 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 alloy is designed for improved corrosion resistance properties in Urea carbonate environments.
Urea Grade is characterized by:
- High resistance to corrosion in ammonium carbamate
- High resistance to intergranular corrosion
- Good weldability
Product standards:
- ASTM A213, A312
- EN 10216-5
- DIN 17458
Standards :
- ASTM: TP316L
- UNS: S31603
- EN Number: 1.4435
- EN Name: X2CrNiMo 18-14-3
- Nr.: 1.4435
- DIN: X 2 CrNiMo 18 14 3
- SS: 2353
- BS: 316S13
- EN 10088
- EN 10028
- AFNOR Z3 CND 18.14.03
- ASTM 316L modified
Applications:
Typical urea plant applications of 316L Urea Grade are:
- Carbamate condensers
- Scrubbers
- Decomposers
- High pressure piping.
Chemical composition / Chemistry (nominal) % :
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | |
| 316L UG | Min. | - | - | - | - | - | 16.00 | 12.50 | 2.20 |
| Max. | 0.030 | 0.40 | 2.00 | 0.045 | 0.030 | 19.00 | 15.00 | 3.00 |
Other UREA Grades :
EURONORM/DIN |
WERKSTOFF NR. | AISI | UNS | BRAND NAME |
| X2 CrNiMo 18-14-3 | 1.4435 | 316L UG | S 31603 | 316L MOD UREA ® |