Stainless Steel 430 Cold Finish Wires, SS UNS S43000 Wire Rods
Why use this magnetic stainless steel?
Stainless steel grade 430 is a non-hardenable steel containing straight chromium, and belongs to the ferritic group of steels.
Stainless steel grade 430 is capable of resisting oxidation up to 870°C (1598°F) in intermittent usage, and up to 815°C (1499°F) in continuous usage. At room temperature, it has the tendency to become brittle, especially when it has been heated for a long time in the 400-600°C (752-1112°F) range. This issue can be overcome with annealing.
Solution annealing can be performed by heating stainless steel grade 430 to 815 - 845°C (1499-1553°F). Then it has to be slow furnace cooled to 600°C (1112°F) and followed by air-cooling in a quick manner - as slow cooling between 540 and 400°C (1004 and 752°F) tends to cause embrittlement.
For sub-critical annealing, heating should be performed to 760-815°C (1400-1499°F), followed by air-cooling or water quenching.
This stainless steel cannot be hardened by thermal treatment.
Dimensions of Wire:
Diameter – 0.255mm (255 Micron – 31 AWG)
Length – Various Options
Weight – Various Options
Spool Type – Large plastic bobbin.
Ohms/m – 11.75
Fe, <0.12% C, 16-18% Cr, <0.75% Ni, <1.0% Mn, <1.0% Si, <0.040% P, <0.030% S
C Min - - Max - 0.12
Mn Min - - Max - 1
Si Min - - Max - 1
P Min - - Max - 0.04
S Min - - Max - 0.30
Cr Min - 16 Max - 0.18
Mo Min - - Max - -
Ni Min - - Max - 0.50
N Min - - Max - -
Tensile Str (MPa) - 483
Yield Str 0.2% - Proof (MPa) Min - 310
Elong (% 50mm)) Min - 22
Hardness - Rockwell B (HR B) Max - 85
Brinell (HB) Max - 183
Density (kg/m3) - 7750
Elastic Modulus (GPa) - 200
Mean Co-eff of Thermal Expansion (µm/m/°C) 0-100°C - 10.4 0-315°C - 11 0-538°C - 11.4
Thermal Conductivity (W/m.K) - At 100°C - 26.1 At 500°C - 26.3
Specific Heat 0-100°C (J/kg.K) - 460
Elec Resistivity (n?.m) - 600