Donghe Metal Product Center 钢 铁 铝 钛 铜 Special-shaped copper

303cu stainless steel bar

303Cu stainless steel bar is easier to cut than 304 by adding Cu element and a small amount of sulfur and phosphorus. Its other properties are similar to 304.

Company phone: 0769-83775310 83775312

Product Introduction

303Cu stainless steel is an austenitic free-cutting stainless steel with acid resistance. To improve the performance of the steel, no more than 0.60% of molybdenum can be added to the steel to resist ablation. The product has good cutting properties, burning resistance and corrosion resistance.

303Cu is a free-cutting stainless steel with added copper and sulfur and selenium respectively. It is used in situations where free cutting and high surface finish are required. 303Cu stainless steel improves cutting performance and high temperature bonding resistance, and is very suitable for automatic lathes, bolts and nuts.

Product Parameters

Tensile strength σb (MPa) ≥520
Conditional yield strength σ0.2 (MPa) ≥205
Elongation δ5 (%) ≥40
Sectional reduction ψ (%) ≥50
hardness HB≤187HB; HRC≤90HRB; HV≤300HV

chemical composition

Chemical composition (%)
C Si Mn P S Ni Cr Mo Cu other
Steel grade 303CU ≦0.15 ≦1.00 ≦3.00 ≦0.20 ≦0.15 8.00/10.00 17:00/19:00 ≦0.60 1.5/3.5 Se≦0.3