HOME > MATERIAL > Duplex  
 
Stainless Steel and Specialty Alloys
  ALLOY GRADES DESCRIPTION USES
Austenitic
Stainless Steels
 F8, CF3M, CF8M, CG8M, CG3M, CE20N "300" series, general corrosion resistant alloys.
 Nuclear, chemical and food processing. Valve and pump trim.
Nitronic¹
50		 Corrosion resistance and high strength. Deck equipment, pumps,valves.
Nitronic¹
60		 Wear and galling resistance. Pump wear rings, valve trim.
Alloy 20, CN7M Corrosion resistance approaching nickel alloys, especially in chloride service.

Process piping exposed to flue gas and solutions.
Super Austenitic
Stainless Steel
 254 SMO² Excellent seawater corrosion resistance combined with nearly twice the strength of common stainless steels.
 Offshore piping systems, couplings. Centrifuge, dewatering equipment. Pump, valve trim, pulp digesters.
Duplex & Super
Duplex Stainless Steel		 2205, CD4MCu
Ferralium 255³
, Escoloy 45D⁴
 "400" series, General corrosion resistant alloys, high strength. Chemical and food process equipment, jet engine compressor cases and rocket engine parts.
Martensitic
Stainless Steel
 CA15, CA40, CA6NM,
M-152,
H-46, Gr. Ascoloy		 High strength stainless steels. More corrosion resistant than 400 series. Cylinders, hollow shafts, marine gas turbine compressor sections.
Precipitation
Hardening Steels		 15-5PH, 17-4PH Family of alloys for extreme heat and corrosion services.
 Gas Turbine parts. Chemical process equipment, heat treating equipment.
Nickel Alloys
 B, C4C, X Hastelloy
S5
, HR1205
, 2305		 Exceptional corrosion resistance and fatigue strength in marine service.
High temperature strength.		 Ship seals, sleeves & housings.
625, CW-6MC
 Good strength and toughness from cryogenic to elevated temperatures.
 Nuclear flow control, chemical process flanges and fittings.
600, CY40 Strong, tough and resistant to a wide range of industrial chemicals.
 Process equipment; food,
pharmaceutical and
chemical.
Cast Nickel, CZ100 Strong, tough and resistant to a wide range of industrial chemicals. Process equipment; food, pharmaceutical and chemical.
Nickel . Copper Comp.
A, D, E		 Acid and alkaline resistant.
Weldable grades.		 Marine pumps, valves, seal housings, filter parts.
Cobalt Alloys 6, 21, 31, X-45 Non-galling, heat and thermal shock resistance. Heat Resistance.
 Bearings and hot work sleeves, housings. Rocket engine parts.
Tool Steel A2, A6, D2, D5, H13 Non-Deforming, wear/abrasion resistant. Forming rolls, dies, slitter blades.
Alloys Steel 4100, 4300, 8600 series Alloys for general structural
use.		 Cylinders, rolls, hollow shafts.
High Nickel
Ductile Iron		 Type 1, Ni-Resist
Type D2, Ni-Resist
Type D5B, Ni-Resis		 Resist corrosion, wear and erosion.
Low thermal expanion, non- magnetic. High order of heat resistance.
 Parts of Gas turbines, pumps, valves, precision tools,electrical generators. Heavy duty diesel engine liners.
Abrasion
Resistant Alloys		 IA
IIB
IIIA, HC250
 3 Chrome white iron.
15 Chrome white iron.
25 Chrome white iron.		 Mineral processing. Coal crushing, cement. Slurry pumps.
Chemical composition

Internationalsteel No

 Chemical composition, %
Typical values		 National steel designations,
superseded by EN
  en astm c n cr ni mo others          
Duplex LDX 2101® 1.4162 S32101 0.03 0.22 21 1.5 0.3 5Mn   – – - -
2304 1.4362 S32304 0.02 0.10 23 4.8 0.3 –   - 1.4362 Z3 CN 23-04 Az 2327
2205 1.4362 S32205* 0.02 0.17 22 5.7 3.1 –   318S13 1.4462 Z3 CND 22-05 Az 2377
4501 1.4501 S32760 0.02 0.25 25 7,0 3.8 W,Cu   - - - -
SAF 2507® 1.4410 S32750 0,04 0.27 25 7,0 4,0 -   - - Z3 CND 25-06 Az 2328
Austenitic 4307 1.4307 304L 0.02 - 18 8.3 – –   304S11 1.4307 Z3 CN 18-10 2353
4404 1.4404 316L 0.02 – 17 11 2.1 –   316S11 1.4404 Z3 CND 17-11-02 2348
904L 1.4539 N08904 0.01 – 20 25 4.3 1.5Cu   904S13 1.4539 Z2 NCDU 25-20 2562
254 SMO® 1.4547 S31254 0.01 0.20 20 18 6.1 Cu   - - - 2378
 
Mechanical properties at 20˚C
Minimum values,
according to EN 10088		  
p h c P (15mm) H (4mm)  
ldx 2101®*
Proof strength Rp0.2 MPa 450 480 530 480 570 600
Tensile strength Rm MPa 650 680 700 700 770 800
Elongation A5 % 30 30 30

38

38 35
hardness hb HB   225 230 230
2304    
Proof strength Rp0.2 MPa 400 400 450 450 520 545
tensile strength Rm MPa 630 650 650 670 685 745
Elongation A5 % 25 20 20 40 35 35
Hardness HB   210 220 225
2205    
Proof strength Rp0.2 MPa 460 460 500 510 620 635
Tensile strength Rm MPa 640 700 700 750 820 835
Elongation A5 % 25 25 20     35 35 35

Hardness

 HB   250 250 250
saf 2507 ®    
Proof strength Rp0.2 MPa 530 530 550 550 590 665
Tensile strength Rm MPa 730 750 750 820 900 895
Elongation A5 % 20 20 20 35 30 33
Hardness HB   250 265 255
Material Standards
en 10088-1 stainless steels – list of stainless steels (not for ordering)
en 10088-2 stainless steels – sheet/plate and strip for general purposes
en 10088-3 stainless steels – semi-finished products, bars, rods, sections for general purposes
en 10028-7 flat products for pressure purposes – stainless steels
en 10272 stainless steel bars for pressure purposes
astm a480 general requirements for flat-rolled stainless and heat resisting steel
astm a959 harmonized standard grade compositions for wrought stainless
astm a240/asme sa-240 heat-resisting cr and cr-ni stainless steel plate, sheet and strip for pressure vessels
astm a666/asme sa-666 austenitic stainless steel sheet, strip, plate, bar for structural and architectural applications
 
Fatique, pulsating tensile test, MPa
LDX 2101®  2304   2205   SAF2507®  4404
Rp0.2  478 446 497 565 280
R m  696 689 767 802 578
Fatigue strength  500 450 510 550 360

 
Impact toughness.
Minimum values according to EN 10028, transverse direction, J
LDX2101®* 2304   2205   SAF2507® 
20°C  60 60 60 60
-40°C  27 40 40 40
 
 
Tensile properties at elevated temperatures.
Minimum values according to EN 10028, MPa
LDX2101®* 2304   2205   SAF2507® 
20°C  60 60 60 60
-40°C  27 40 40 40
 
Fatique, pulsating tensile test, MPa
LDX2101®  2304   2205   SAF 2507®  4404
Rp0.2  478 446 497 565 280
R m  696 689 767 802 578
Fatigue strength  500 450 510 550 360
 
Typical values
20°C   100°C   200°C   300°C 
Density  g/cm3  7.8
Modulus of elasticity  GPa  200 194 186 180
Poissons ratio  0.3
Linear expansion at (RT . T)°C  X10-6/°C  .  13 13.5 14
Thermal conductivity  W/m°C  15 16 17 18
Thermal capacity  J/kg°C  500 530 560 590
Electric resistivity  μΩm  0.8 0.85 0.9 1