EN 1.4460 / AISI 329 / UNS S32900
MATERIAL DESCRIPTION
EN 1.4460 / AISI 329 is a duplex stainless steel with optimized sulfur content and inclusion morphology for improved machinability. The grade is characterized by:
- Excellent machinability
- High mechanical strength
- Very good resistance to pitting and stress corrosion cracking
Applications
EN 1.4460 / AISI 329 is especially suited for the manufacture of components for pumps and other equipment used in, for example, alkaline environments commonly found in the pulp and paper industry.
Heat Treatment
Solution annealed and quenched condition.
Ferrite content
Ferrite content is 55 – 75 %
Chemical Composition (Specific for Bars)
| Chemical composition (nominal) % | C | Mn | P | S | Si | Cr | Ni | Mo | Cu | N |
| ≤0,05 | ≤2,0 | ≤0,035 | ≤0,030 | ≤1,0 | 25,5 | 5,0 | 1,5 | 0,08 |
PREN = % Cr + 3,3 % Mo + 16 x % N ≥ 31
Reference Standards
General:
- PED 2014/68/EU Annex I section 4.3
- AD2000 W0
Bar and forging:
- ASTM A276, ASTM A479, ASTM A182, EN 10088-3
Mechanical Properties (Typical)
| Yield strength Rp0.2, MPa |
Tensile strength Rm, MPa |
Elongation [%] |
Hardness [HB] |
Impact, Charpy-V, ºC [J] |
|
| BAR | ≥ 450 | 620-880 | ≥ 20 | ≤ 260 | If requested |
| DIA | KG/M |
| 27 | 4,50 |
| 32 | 6,29 |
| 36 | 7,92 |
| 38 | 8,86 |
| 50 | 15,33 |
| 52 | 16,58 |
| 56,2 | 19,31 |
| 57 | 19,86 |
| 61,2 | 22,90 |
| 65 | 25,83 |
| 66,2 | 26,86 |
| 71,4 | 31,17 |
| 76,4 | 36,22 |
| 81,4 | 41,00 |
| 88 | 47,90 |
| 91,4 | 51,63 |
| DIA | KG/M |
| 96,4 | 57,50 |
| 98 | 59,30 |
| 102 | 64,40 |
| 107 | 70,80 |
| 112 | 77,40 |
| 115 | 81,56 |
| 117 | 84,40 |
| 122 | 91,74 |
| 127 | 99,40 |
| 132 | 107,54 |
| 143 | 126,15 |
| 153 | 144,33 |
| 163 | 163,75 |
| 173 | 184,00 |
| 184 | 208,50 |
Equivalent standards
- EN 1.4460
- UNS S32900
- EN 10088-3