EC 80 Case-hardening steel [16MnCr5] 1.7131

1. Chemical composition

CSiMnPSCrNiMoOther elements

2. mechanical properties

ConditionNominal thicknessTensile strengthPlug-in limit Ultimate elongationRigor
in mmRm in MPaRp0,2 in MPain % (min.)HBS
overup tominmaxminmaxA50A
Physical propertiesGeneral properties
(Guide values for 20° C)
Density of g/cm37,85Special annealingja
Thermal conductivity W/(mK)35-45Workability1
Modulus of elasticity kN/mm2210Dimensional stability1
Therm. linear expansion-Weldability1
Coeffizient 10-6/K11-14Corrosion resistance5
Acid resistance5
Standard tolerancesSurface treatment
Surface quality Ra1,6Hardening4
Thickness tolerance mm+0,4/+0,3Nickel-plating2
Length and width tolerance mm)-0/+2
Parallelism mm<0,05
Flatness mm<0,15

3. Type:
specially stress-relieved annealed, thickness ground, length and width sawn or plasma cut
Against surcharge: Outside contour milled with tolerance of +/- 0.2 mm

4. Main application / Special features:
Sliders, connecting rods, sliding rods, jig base plates, clamping systems and hole locking systems