Download: duplex.pdf
Ex stock - quick delivery - competitive price Plate - sheet - round bar - tube ss - welded tube - elbow - cap - reduction
DUPLEX - UNS S31803 - 1.4462 - X2CrNiMoN22.5.3 - F51 - Boehler A903 - UNS S32205 - F60
Similar to: 329LN - SAF2205 - SANMAC - URANAUS 45N - FALC223
PREN = minimum 34
CERTIFICATIONS: ASTM – EN – NORSOK – NACE - WN
TEST ON REQUEST: X-RAY, DP, PMI, ULTRASONIC, CORROSION TEST (G48 A/B or other)
Stainless steel, acier inoxydable, rostfreier Stahl, Aco Inoxidável, Acero Inoxidables, Roestvrij staal, paslanmaz çelik, Нержавеющих сталей, ανοξείδωτο χάλυβα, rostfritt stål, nerez, stali nierdzewnej
We can offer these materials in commercial dimensions or cut to size required (cutting by shearing, plasma, laser and waterjet with working stroke 3000x6750 max thk. 200 mm and 5 axis cut).
We also supply welded and machining construction according to drawing and welded tubes in all dimensions.
Besides, we can provide non-commercial sizes and dimensions from steelwork according to customers' specifications and to special delivery and price conditions.
Technical datas 
Properties
Stainless ferritic-austenitic Cr-Ni-Mo steel with nitrogen addition. High corrosion resistance, especially against stress corrosion cracking in solutions containing chloride. Good strength properties. Resistant to intergranular corrosion in the temperature range up to 300°C.
Heat treatment subsequent to welding not necessary. Surface condition for optimum corrosion resistance: pickled, heat treated free from scale or machined.
Application
Components in the chemical industry, e.g. separator and heat exchanger parts, in the paper industry, oil and gas production, compressor parts, seawater desalination plants.
Chemical composition
(Average %)
| C | Si | Mn | Cr | Mo | Ni | N |
| 0,025 | 0,60 | 1,30 | 22,80 | 3,20 | 5,80 | 0,17 |
Standards
| EN/DIN | ASTM |
S.S. | UNS | AFNOR | BS |
| 1.4462 X2CrNiMoN22-5-3 |
A240 / A276 /A182 / A479 |
2377 | S31803 | Z3CND22-05 Az | 318 S 13 |
Hot forming
Forging:
1200 to 950°C
Air cooling.
Heat treatment
Solution annealing:
1020 to 1100°C.
Water, air (thickness below 2 mm)
Structure:
Ferrite + Austenite
Mechanical properties at room temperature
Condition: solution annealed
| Product | Size | 0.2% proof stress N/mm² min. | Tensile strenght N/mm² | Elongation A5 % min. | Impact strength (ISO-V) J min. | |||||
| mm | L | Q | T | L | Q | T | ||||
| St | ≤160 | 450 | 650 | 880 | 25 | — | — | 100 | — | — |
| BI | ≤75 | 460 | 640 | 840 | 25¹ | 25¹ | — | 90 | 60 | — |
| St = Bar BI = Sheet or plate L = Longitudinal, Q = Transverse, T = Tangential |
¹ For sheet or plate < 3 mm = A80 mm specimen The values for other products and dimensions shall be established by agreement. |
High - temperature properties
Condition: solution annealed
0.2% proof stress N/mm² min. |
Temperature | |||
| 100° | 150° | 200° | 250° | |
| 360 | 335 | 315 | 300 | |
Welding
Good weldability.
Welding is possible with all processes usual for stainless steels.
We recommend depending on applications electric arc welding with covered electrodes, inert gas welding or SA-welding.
Preheating and heat treatment after welding is not necessary.
For high stressed heavy walled constructions the limited preheat temperature of 150°C maximum is recommendable.
Maximum interpass temperature 150°C.
Keep heat input low especially for small wall thicknesses.
The TIG-process should be given reference for root welding.
Filler metals
BÖHLER-THYSSEN
Type THERMANIT 22/09
Recommendation for machining
(Condition solution annealed, average values)
Turning with carbide tipped tools
| depth of cut, mm feed, mm/rev BÖHLERIT, grade ISO, grade |
up to 1 0,1 to 0,2 EB10, SB20 M10, P20 |
1 to 4 0,2 to 0,4 EB20, EB30 M20, M30 |
4 to 8 0,3 to 0,6 SB30, EB20, HB20 P30, M20, K20 |
| cutting speed, m/min | |||
| indexable carbide inserts edge life 15 min |
190 to 160 | 160 to 140 | 120 to 100 |
| brazed carbide tipped tools edge life 30 min |
180 to 140 | 150 to 100 | 110 to 70 |
| hardfaced indexable carbide inserts edge life 15 min BÖHLERIT ROYAL 121/ISO P20 BÖHLERIT ROYAL 131/ISO P35 |
to 210 to 170 |
to 180 to 130 |
to 140 to 90 |
| cutting angles for brazed clearance angle rake angle angle of inclination |
6 to 10° 12 to 25° 0° |
6 to 10° 12 to 20° 0° |
6 to 10° 12 to 20° 0° |
Turning with HSS tools
| depth of cut, mm feed, mm/rev HSS-grade BOHLER/DIN |
0,5 0,1 S700 / S10-4-3-10 |
3 0,5 |
| cutting speed, m/min edge life 60 min |
40 to 35 | 35 to 20 |
| rake angle clearance angle angle of inclination |
14 to 18° 8 to 10° 0 to 4° |
14 to 18° 8 to 10° 0 to 4° |
Milling with carbide tipped cutters
| feed, mm/tooth | up to 0,2 | 0,2 to 0,3 |
| cutting speed, m/min | ||
| BÖHLERIT SBF / ISO P25 BÖHLERIT SB40 / ISO P40 BÖHLERIT ROYAL 131 / ISO P35 |
150 to 90 100 to 60 130 to 80 |
110 to 50 70 to 35 - - |
Physical properties
| Density at 20 °C (68°F) | 7,80 kg/dm³ |
| Thermal conductivity at 20 °C (68°F) | 15,0 W/(m.K) |
| Specific heat at 20 °C (68°F) | 500 J/(kg.K) |
| Electric resistivity at 20 °C (68°F) | 0,80 Ohm. mm²/m |
| Modulus of elasticity at 20 °C (68°F) | 200 x 10³ N/mm² |
| Magnetic properties | magnetic |
| Thermal expansion between 20 °C (68°F) and ...°C (°F), 10E-6 m/(m.K) at | Temperature °C (°F) | 10E-6 m/(m.K) |
| 100° (212°F) | 13,0 | |
| 200°(392°F) | 13,5 | |
| 300°(572°F) | 14 |
Modulus of elasticity, 10³ N/mm² at |
Temperature °C (°F) | 10³ N/mm² |
| 20° (68°F) | 200 | |
| 100° (212°F) | 194 | |
| 200°(392°F) | 186 | |
| 300°(572°F) | 180 |
As regards applications and processing steps that are not expressly mentioned in this product description/data sheet, the customer shall in each individual case be required to consult us.