What is 3Cr13 stainless steel?

3Cr13 steel is a martensitic stainless steel used after quenching and tempering. Compared with 1Cr13 and 2Cr13 steel, it has higher strength, hardness and hardenability, but its corrosion resistance and thermal stability below 700℃ are lower than those of 1Cr13 and 2Cr13 steel. The cold working performance and welding performance are not good, and heat treatment should be performed immediately after welding to prevent cracking. It has good cutting performance in the annealed state.

3Cr13 similar grades: 430 (USA); SUS430 (Japan)

3Cr13 chemical composition
C 0.25～0.34
Mn<0.60
Si<0.60
Cr12.00～14.00
N i0.60
S 0.030
P 0.030

3Cr13 heat treatment system
Bars and forgings are oil quenched or air cooled at 1000～1050℃, and tempered at 200～300℃.
Plates are annealed at 740～780℃ or tempered at high temperature.

3Cr13 Variety Specifications
Hot-rolled material d8～120mm, square 8～120mm;
Forged material d75～250mm, square 55～250mm;
Cold-drawn material d8～65mm, square 8～50mm, s8～50mm;
Hot-rolled steel plate 4.5~20×600～1800×600～6500mm,
1.0~4.0×600～1000×800～2000mm;
Cold-rolled sheet 1.0～4.0×750～1000×1500～2000mm;
Bars, forgings and plates are all supplied in annealed or high temperature tempered state
Cold-rolled steel strip 0.1～2.5×5～400mm;
Strip is supplied in soft or hard state
Seamless steel pipe d 57～133×4.0～30mm;
The wire is supplied in cold-drawn or heat-treated state, and can also be supplied after grinding or polishing.