EN 1.4410 / SUPER DUPLEX UNS S32750 / F53 / 2507
MATERIAL DESCRIPTION
Super Duplex Stainless Steel UNS S32750 is the most common super duplex grade in the market. UNS S32750 is a duplex stainless steel especially designed for service in aggressive chloride-containing environments. It has very good resistance to localized corrosion and stress corrosion cracking in combination with high mechanical strength. It is widely used in oil & gas, hydropower, pressure vessels, pulp & paper, structural components and chemical tankers.
Applications
The main applications are for details with special requirements for high corrosion resistance.
UNS S32750 is characterized by:
- High resistance to stress corrosion cracking in halide containing environments.
- High resistance to pitting and crevice corrosion.
- High resistance to general corrosion.
- High mechanical strength.
- High resistance to erosion corrosion and corrosion fatigue.
Heat Treatment
Solution annealing at 1100°C followed by water quenching.
Weldability
Very good.
Chemical composition
| Weight % | C | Si | Mn | S | P | Cr | Ni | Mo | Cu | N |
| Min. | 24,0 | 6,00 | 3,00 | 0,24 | ||||||
| Max. | 0,03 | 0,80 | 1,20 | 0,020 | 0,035 | 26,0 | 8,00 | 5,00 | 0,50 | 0,32 |
NORSOK: PREN = (Cr% + 3.3Mo% + 16N%) ≥ 40
Product Standards: EN 10088-3, ASTM A276, ASTM A479, ASTM A182–11A
(Chemical composition and mechanical properties only)
Approvals: NACE MR0175, NORSOK M650, NORSOK M630 MDS D51/ D53/ D54/ D55/ D57/ D58
Mechanical properties
| Yield strength Rp0.2, MPa |
Tensile strength Rm, MPa |
Elongation [%] |
Hardness [HB] |
Impact, Charpy-V, -46ºC [J] |
Pre | |
| BAR | ≥ 550 | ≥ 750 | ≥ 25 | ≤ 310 | ≥ 45 | ≥ 40 |
| PLATE CR (COIL) | ≥ 550 | 750 – 1000 | ≥ 25 | ≤ 310 | ≥ 45 | ≥ 40 |
| PLATE HR (COIL) | ≥ 550 | 750 – 930 | ≥ 25 | ≤ 310 | ≥ 45 | ≥ 40 |
| PLATE (QUARTO) | ≥ 550 | 750 – 930 | ≥ 25 | ≤ 310 | ≥ 45 | ≥ 40 |
Round bar stock
| DIA | KG/M |
| 16 MM | 1.7 |
| 20 MM | 2.5 |
| 25 MM | 3.9 |
| 30 MM | 5.7 |
| 35 MM | 7.7 |
| 40 MM | 10.1 |
| 45 MM | 12.8 |
| 50 MM | 15.8 |
| 60 MM | 22.6 |
| 70 MM | 30.8 |
| 80 MM | 40.2 |
| 90 MM | 50.9 |
| 100 MM | 62.9 |
| 110 MM | 76.1 |
| 120 MM | 90.5 |
| 125 MM | 96 |
| DIA | KG/M |
| 130 MM | 106 |
| 140 MM | 123 |
| 150 MM | 141 |
| 160 MM | 161 |
| 170 MM | 182 |
| 180 MM | 204 |
| 200 MM | 251 |
| 225 MM | 319 |
| 250 MM | 385 |
| 280 MM | 494 |
| 300 MM | 566 |
| 330 MM | 686 |
| 350 MM | 780 |
| 380 MM | 910 |
| 406,4 MM | 1040 |
Plate stock
| MEASUREMENTS | KG/PLATE |
| 2 X 1500 X 3000 MM | 72 |
| 3 X 1500 X 3000 MM | 108 |
| 3 X 1500 X 6000 MM | 216 |
| 3 X 2000 X 6000 MM | 288 |
| 4 X 1500 X 3000 MM | 144 |
| 4 X 1500 X 6000 MM | 288 |
| 4 X 2000 X 6000 MM | 384 |
| 5 X 1500 X 3000 MM | 180 |
| 5 X 1500 X 6000 MM | 360 |
| 5 X 2000 X 6000 MM | 480 |
| 6 X 1500 X 3000 MM | 216 |
| 6 X 1500 X 6000 MM | 432 |
| 6 X 2000 X 6000 MM | 576 |
| 8 X 1500 X 3000 MM | 297 |
| 8 X 1500 X 6000 MM | 594 |
| 8 X 2000 X 6000 MM | 791 |
| 10 X 1500 X 3000 MM | 371 |
| 10 X 1500 X 6000 MM | 742 |
| 10 X 2000 X 6000 MM | 989 |
| 12 X 1500 X 3000 MM | 445 |
| MEASUREMENTS | KG/PLATE |
| 12 X 1500 X 6000 MM | 890 |
| 12 X 2000 X 6000 MM | 1187 |
| 15 X 1500 X 3000 MM | 557 |
| 15 X 1500 X 6000 MM | 1113 |
| 15 X 2000 X 6000 MM | 1484 |
| 20 X 1500 X 3000 MM | 742 |
| 20 X 1500 X 6000 MM | 1484 |
| 20 X 2000 X 6000 MM | 1978 |
| 25 X 1500 X 3000 MM | 927 |
| 25 X 1500 X 6000 MM | 1854 |
| 25 X 2000 X 6000 MM | 2472 |
| 30 X 1500 X 3000 MM | 1113 |
| 30 X 1500 X 6000 MM | 2225 |
| 30 X 2000 X 6000 MM | 2966 |
| 35 X 2000 X 4000 MM | 2240 |
| 40 X 1500 X 3000 MM | 1484 |
| 40 X 2000 X 6000 MM | 3956 |
| 45 X 2000 X 4000 MM | 2880 |
| 50 X 1500 X 3000 MM | 1854 |
| 50 X 2000 X 4000 MM | 3296 |
Coil stock
| 1300 MM | 1500 MM | 2000 MM |
| 0,4 MM | 1,5 MM | 3 MM |
| 0,5 MM | 3 MM | 4 MM |
| 0,7 MM | 4 MM | 5 MM |
| 1 MM | 5 MM | 6 MM |
| 6 MM |
Equivalent standards
- EN 1.4410
- UNS S32750
- Grade F53
- (SAF 2507)