4Cr13

Description

4Cr13是高硬度及高耐磨性的一种不锈钢材料,淬火后比3Cr13硬度高一些、耐蚀性良好.

4Cr13 is stainless steel material with high hardness and wear resistance. After quenching, it has higher hardness and good corrosion resistance than 3Cr13

Worldwide equivalents of grade: 4Cr13

country / regionChinaEUGermanyJapanUSA
StandardGBENJIS
Grade4Cr13X39Cr13 (1.4031)X39Cr13SUS420J2420S45
 
 
 
 
 
Chemical Composition of 4Cr13 Steel Material
CSiMnSPCrNi
0.36~0.45≤0.60≤0.80≤0.030≤0.03512.00~14.00≤0.60

Mechanical Properties of 4Cr13

HRC hardness: ≥ 50 (Quenched and Tempered)

HBW hardness: ≤ 235 (Annealed)

Physical Properties of 4Cr13

Density (g/cm3): 7.75

Specific heat capacity (J/Kg·K): 460 at 0-100℃

Thermal conductivity (W/m·K):

28.1 at 100℃

28.9 at 500℃

Coefficients of linear thermal expansion (10-6/K):

10.5 (0-100℃)

12.0 (0-500℃)

Electrical Resistivity (μΩ·m): 0.59 at 20℃

Longitudinal modulus of elasticity (kN/mm2): 215 at 20℃

Heat Treatment

Annealing:
750 to 800°C for about 2 to 5 hours
slow controlled cooling of 10 to 20°C per hour to about 650°C;
further cooling in air, max. 200 HB

Hardening:
1000 to 1050°C
15 to 30 minutes keeping curing temperature
quenching in oil/compressed gas/hot bath
obtainable hardness: 53 – 56 HRC

Tempering:
slow heating to tempering temperature immediately after hardening, to 180 to 300 °C depending on desired hardness
1 hour per 20 mm: min. 2 hours

Features and Application

淬火后比3Cr13硬度高一些、耐蚀性良好。淬火硬度一般在HRC48以上。

工业方面:宜放电、磨削加工,适合做高镜面高精密注塑模具模仁模腔,热处理后有较高的硬度和韧性,也可做冲压模具配件、模板等,对接触产品表面有要求夹治具模具等;适用一般有高温防锈防腐的场景。

民用方面:可以制做餐用刀具、户外刀具。

After quenching, the hardness is higher than 3Cr13 and the corrosion resistance is good. The quenching hardness is generally above hrc48.

Industry: it is suitable for electric discharge and grinding. It is suitable for making high-precision injection mold kernel cavity with high mirror surface. It has high hardness and toughness after heat treatment. It can also be used as stamping mold accessories and templates. It is required to clamp fixture molds in contact with the product surface; It is applicable to scenes with high temperature rust prevention and corrosion prevention.

For civil use: it can make tableware knives and outdoor knives.

4Cr13 products

Product typeProductsDimensionProcessesDeliver Status
Plates / SheetsPlates / Sheets0.08-200mm(T)*W*LForging, hot rolling and cold rollingAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel BarRound Bar, Flat Bar, Square BarΦ8-1200mm*LForging, hot rolling and cold rolling, CastBlack, Rough Turning, Shot Blasting,
Coil / StripSteel Coil /Steel Strip0.03-16.0x1200mmCold-Rolled & Hot-RolledAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / TubesSeamless Pipes/Tubes, Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion, Cold Drawn, WeldedAnnealed, Solution and Aging, Q+T, ACID-WASHED