GX2CrNiMoN22-5-3 stainless steel is duplex stainless steel for casting purpose; it’s a ferritic-austenitic corrosion resistant casting steel.
GX2CrNiMoN22-5-3 is defined in standard EN 10283 and EN 10213 and ISO 11972, the EN number is 1.4470
EN 10213: 2007 Steel castings for pressure purposes
EN 10283: 2010 Corrosion resistant steel castings
ISO 11972:2015 specifies cast steels for general corrosion-resistant applications.
X2CrNiMoN22-5-3 (EN 1.4462) is similar grade in standard of in EN 10088-3
EN 10088-3 : Stainless steels www.castingquality.com
GX2CrNiMoN22-5-3 (EN 1.4470) Equivalent Stainless Steel grade:
ASTM A890/A995 Grade 4A; Type 22Cr-5Ni-Mo-N; Casting UNS J92205; ACI CD3MN; Wrought UNS S31803; Wrought grade SS2205; EN 1.4462 X2CrNiMoN22-5-3; SUS 329J3L
Pump Body-investment Casting
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GX2CrNiMoN22-5-3 (EN 1.4470) Heat treatment process: Solution annealing + water quenching (+AT)
Heat to 1120-1150°C for sufficient time to heat casting uniformly to temperature and water quench, or the casting may be furnace cooled to 1010-1050°C prior to water quenching in order to improve corrosion resistance and prevent cracks in complex shapes. www.castingquality.com
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GX2CrNiMoN22-5-3Chemical requirements and Mechanical Property
| Standard | EN10213 | EN10283 | ISO 11972 | EN 10088-3 |
| Grade | GX2CrNiMoN22-5-3 | GX2CrNiMoN22-5-3 | GX2CrNiMoN22-5-3 | X2CrNiMoN22-5-3 |
| EN number | 1.4470 | 1.4470 | 1.4470 | 1.4462 |
| C max | 0.03 | 0.03 | 0.03 | 0.030 |
| Si max | 1.00 | 1.00 | 1.0 | 1.0 |
| Mn max | 2.00 | 2.00 | 2.00 | 2.00 |
| P max | 0.035 | 0.035 | 0.035 | 0.035 |
| S max | 0.025 | 0.025 | 0.025 | 0.015 |
| Cr | 21.0-23.0 | 21.0-23.0 | 21.0-23.0 | 21.0-23.0 |
| Mo | 2.5-3.5 | 2.5-3.5 | 2.5-3.5 | 2.5-3.5 |
| Ni | 4.5-6.5 | 4.5-6.5 | 4.5-6.5 | 4.5-6.5 |
| Cu | 0.50 | – | – | – |
| N | 0.12-0.20 | 0.12-0.20 | 0.12-0.20 | 0.10-0.2 |
| Tensile Mpa,min | 420 | 420 | 420 | 450 |
| 0.2% proof Mpa, min | 600-800 | 600 | 650 | 650-880 |
| Elongation, %,min | 20 (+AT) | 20 (+AT) | 22 (+AT) | 25 |
| Impact Kv,J, min | 30 | 30 | 50 | 100 |
| Thickness, mm | 150 | 150 | 150 | 160 |
| Hardness, HB, max | – | – | – | 270 |
GX2CrNiMoN22-5-3 (EN 1.4470)）BENEFITS
Corrosion and pitting resistance
Better for abrasive applications
Higher strength than standard stainless steel
Improved ductility and weldability
Better resistance to embrittlement
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Mechanical properties
ReH Minimum yield strength / Mindestwert der oberen Streckgrenze / Limite d elasticite minimale
Rm Tensile strength / Zugfestigkeit / Resistance a la traction
A Minimum elongation / Mindestwert der Bruchdehnung / Allongement minimal
J Notch impact test / Kerbschlagbiegeversuch / Essai de flexion par choc
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Heat treatment conditions
+A Soft annealed
+AC Annealed to achieve spheroidization of the carbides
+AR As rolled
+AT Solution annealed
+C Cold drawn / hard
+CR Cold rolled
+FP Treated to ferrite-pearlite structure and hardness range
+I Isothermal annealing
+LC Cold drawn / soft
+M Thermo mechanical rolling
+N Normalized
+NT Normalized and tempered
+P Precipitation hardened
+PE Peeled
+QA Air quenched and tempered
+QL Liquid quenched and tempered
+QT Quenched and tempered
+S Treated to improve shearability
+SH As rolled and turned
+SR Cold drawn and stress relieved
+T Tempered
+TH Treated to hardness range
+WW Warm worked
+U Untreated
Duplex Stainless Steel CD3MN (SS2205)
