Stainless steel castings, ferritic-austenitic qualities (Duplex)

Designation Properties and information on application
GX40CrNi27-4 Grad HD
1.4340 (SEW 410) A297
Chromium carbide-containing material with high wear resistance; used for wearing parts in pumps and mechanical engineering (wear plates); hardness up to 300 HB
G-X 8 CrNiN 26 7
1.4347 (SEW 410-88) 10283
Material for use in shipbuilding, mechanical engineering, valve housings
GX2CrNiMoN25-7-3
1.4417 (10283)
A 890 UNS J 92205
As material 1.4469; tungsten improves the pitting resistance
GX2CrNiMoN22-5-3
1.4470 (EN10213-4)
(10283) A 890 UNS J 92205
Duplex steel castings are equivalent to rolled and forged material 1.4462; for use in the oil, natural gas and chemical industries; high-strength, corrosion-resistant material
G-X 6 CrNiMo 24 8 2
1.4463
Good machining properties; for use in seawater, chemicals, etc.; for drum bases, shipbuilding components
GX40CrNiMo27-5
1.4464 (SEW 410-98)
As 1.4340, but with a higher corrosion resistance; used for wearing parts in the chemical industry; hardness 230-300 HB
G-X 3 CrNiMoN 26 6 3
1.4468 (SEW 410-88) 10283
Resistant to pitting in chloride-bearing media; used for valves and pumps in chemical and crude oil installations
GX2CrNiMoN26-7-4
1.4469 (EN 10213-4)
Resistant to temperatures as low as -70 °C = 35 J; for use in crude oil and natural gas production in areas subjected to strong corrosive influences involving high H2S partial pressures and/or temperatures
GX2CrNiMoCuN26-6-3
1.4515 (SEWGX2CrNiMoCuN26-6-3 1.4515 (SEW 410-98)410-98)
Similar properties to 1.4468; for use in crude oil installations also at elevated H2S partial pressure; the material variant with Rp02 =520 N/mm is equivalent to 9.4462
GX2CrNiCuN25-6-3-3
1.4517 (EN 10213-4)
(EN 10283 A 890 UNS J 93372
Resistant to temperatures as low as -70 °C = 35 J in solution-annealed condition; precipitation-hardening to around 300-320 HB possible at 480-520 °C; material 1.4517 equivalent to 1.4593 SEW 410
UNS S 31803
A 790
Microstructure: ferrite and austenite, as J 92205 and 1.4470
UNS S 32750
A 790
Microstructure: ferrite and austenite, as 1.4469
25Cr5NiMoCuN
A 890 J93372
As 1.4517
24Cr10NiMoN
A 890 UNS J 93345
As 1.4468
22Cr5NiMoN
A 890 UNS J 92205
As 1.4470, material equivalent to rolled steel ASTM-A790 Grade S 31803
25Cr7NiMoN
A 890 UNS J 93404
As 1.4496, material equivalent to rolled steel ASTM-A 790 Grade32750
25Cr7NiMoN
A 890 UNS J 93380
As 1.4417, material equivalent to rolled steel ASTM A 790 Grade S 31260
Schweden SIS 14
2324-12
Used in ship propulsion systems, such as nozzle ring chambers and control valves
UNS J 93372
(CD 4 Mcu)
As 1.4517