21CrMoV5-11 / 1.8070 Steel

Chemical Composition per EN 10269

GRADE	NUMBER	C	Si	Mn	P	S	Cr	Mo	Ni	V
21CrMoV5-11	1.8070	0.17-0.25	0.30-0.60	0.30-0.60	≤ 0.035	≤ 0.035	1.20-1.50	1.00-1.20	≤ 0.60	0.25-0.35

21CrMoV5-11 / 1.8070 Steel Description

Special structural steel.

21CrMoV5-11 / 1.8070 Steel Applications

Screws and nuts and forged components for staem engines up to working temperatures of maximum 539 degree.

21CrMoV5-11 / 1.8070 Steel Mechanical Properties

Hot working temperature /℃:    1100～850
Heat treatment temperature /℃|annealing / normalizing:   650~740
Heat treatment temperature /℃|quenching:    900~950  Oil or Air
Heat treatment temperature /℃|tempering:    680~740
HBW:    205~250
(≥)|σb/MPa:  690～830
(≥)|σs/MPa:   540
(≥)|δ5(%):    16
(≥)|AKV/J:     55

Mechanical Property Under High Temperature

Yield strength σ0.2≥/MPa|200℃:    510
Yield strength σ0.2≥/MPa|300℃:    481
Yield strength σ0.2≥/MPa|350℃:    461
Yield strength σ0.2≥/MPa|400℃:    431
Yield strength σ0.2≥/MPa|450℃:    402
Yield strength σ0.2≥/MPa|500℃:    373

21CrMoV5-11 / 1.8070 Steel Available Shapes  

Black bar /Flat bar / Square bar /Pipe, /Steel strip, /sheet

Bright – peeled + polishing, centerless grinding

Forged – ring, tube, pipe casing, discs, shaft

Physical properties (average values) at ambient temperature

Modulus of elasticity [103 x N/mm2 ]: 210 Density [g/cm3 ]: 7.80 Continuous Cooling Transformation (CCT)

21CrMoV5-11 / 1.8070 Steel Soft Annealing

Heat to 650-740 degree, cool slowly.

21CrMoV5-11 / 1.8070 Steel Hardening

Harden from a temperature of 900-950 degree followed by oil or air quenching.

21CrMoV5-11 / 1.8070 Steel Tempering

Tempering temperature: 680-740 degree.

21CrMoV5-11 / 1.8070 Steel Forging

Hot forming temperature: 1100-850degree.