329/ S32900/1.4460  duplex stainless steel round bar, stainless steel bar, stainless steel straight bar.

The steel grade 1.4460 AISI 329 is a stainless, acid resistant, duplex steel with improved machinability. Since the steel is machinability improved, it is suitable for production of details with comprehensive machining. The steel has very good corrosion resistance particular in chloride-bearing environments and is extra resistant to pitting corrosion, crevice corrosion, stress corrosion cracking and corrosion fatigue. It also has high strength and toughness.

Products Details

▪ Propeller- and Pump shafting ▪ Pump- and Valve parts ▪ Pistons ▪ Stirrers ▪ Bolts ▪ Nuts
C 0.05 max
Mn 2.0 ,ax
P 0.035 max
S 0.015 max
Si 1.0 max
Cr 25.0-28.0
Mo 1.3-2.0
Ni 4.5-6.2
N 0.05-0.2
▪ +A: Annealed (full/soft/spheroidizing) ▪ +N: Normalized ▪ +NT: Normalized and tempered ▪ +QT: Quenched and tempered (water/oil) ▪ +AT: Solution annealed ▪ +P: Precipitation hardened▪ UNS: S32900 ▪ DIN: 1.4460 ▪ EN: X3CrNiMoN27-5-2
Proof Strength Tensile Strength Elongation Hardness
MPa MPa % Brinell
≥450 620-800 20 ≤260
Smelting Option 1 EAF: Electric Arc Furnace 2 EAF+LF+VD: Refined-smelting and vacuum degassing 3 EAF+ESR: Electro Slag Remelting 4 EAF+PESR: protective atmosphere Electro Slag Remelting 5 VIM+PESR: Vacuum induction melting Forming Option 1 Hot rolling process 2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging▪ Black Surface ▪ Grounded: Bright but rough ; Not precision ▪ Machining for plate: Bright and precision; Little turning scar ▪ Peeled/Turned: Bright and precision; Little turning scar ▪ Polished: Very Bright and precision size; Not turning scar329 has a Pitting Resistance Equivalent (PRE) of ≥31. 329 has very good resistance to stress corrosion cracking in chloride environments. The grade has also good resistance to general corrosion in acidic media, thanks to the high chromium content and alloying with molybdenum. Microstructure: In the solution annealed and quenched condition Sanmac 329 has an austenitic-ferritic microstructure, which is free from grain-boundary carbides and intermetallic phases. The ferrite content is 55 – 75%. Good machinability, weldability and formability 1.4460 is possible to weld and do not need to be welded with welding consumables similar to that of the parent one. The steel shall be welded as austenitic material with as low heat input as possible. It can be both cold- and hot formed. The steel is easier to machine and it has significantly better machinability, but slightly worse corrosion resistance than 1.4462. ANNEALING: Parts should be solution annealed between 1870/2010ºF (1020/1100ºC) and water quenched. Approximately equal amounts of austenite and delta ferrite will be formed after solution annealing. This grade is quite difficult to machine, perhaps more so than the norm TISCO top quality 329 stainless steel hot rolled plate, 329 cold rolled stainless steel sheet

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