EC 80 Case-hardening steel [16MnCr5] 1.7131

1. Chemical composition

C Si Mn P S Cr Ni Mo Other elements
0,14-0,19 0,4 1,0-1,3 0,035 0,035 0,8-1,1

2. mechanical properties

Condition Nominal thickness Tensile strength Plug-in limit  Ultimate elongation Rigor
in mm Rm in MPa Rp0,2 in MPa in % (min.) HBS
over up to min max min max A50 A
polished 5 150 640 1180 440 635 9-11 140-187
Physical properties General properties
(Guide values for 20° C)
Density of g/cm3 7,85 Special annealing ja
Thermal conductivity W/(mK) 35-45 Workability 1
Modulus of elasticity kN/mm2 210 Dimensional stability 1
Therm. linear expansion- Weldability 1
Coeffizient 10-6/K 11-14 Corrosion resistance 5
Acid resistance 5
Standard tolerances Surface treatment
Surface quality Ra 1,6 Hardening 4
Thickness tolerance mm +0,4/+0,3 Nickel-plating 2
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

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