21NiCrMo2 Stockist, 21NiCrMo2 Equivalent Steel

21NiCrMo2
2015-01-24 15:54:49   Origin:   Remark:0 Click:

Steel 21NiCrMo2 is a 0.55%Ni - 0.5%Cr - 0.2%Mo Carburizing structural steel, 21NiCrMo2 Round bar, flat bar Steelmaking, ESR, Hot forging, rolling, heat treatment, ultrasonic test, cold working.

MATERIAL TECHNICAL DATASHEET - DIN 21NiCrMo2
MATERIAL CATEGORY: Carburizing structural steel
MATERIAL SPECIFICATIONS - DIN EN 10084 (1998), DIN 17210 (1986)
CHEMICAL COMPOSITION (mass weight %)      
C (%):     0.17 ~ 0.23
Si (%):    ≤ 0.40
Mn (%):   0.65 ~ 0.95
P (%)≤:   0.035
S (%)≤:   0.035
Cr (%):    0.35 ~ 0.70
Mo (%):   0.15 ~ 0.25
Ni (%):    0.40 ~ 0.70
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃:    1150~850
Heat treatment temperature /℃|annealing:      650~700
Heat treatment temperature /℃|carburizing:    900~950
Heat treatment temperature /℃|quenching  (Center):    840~870
Heat treatment temperature /℃|quenching  (Surface):   800~830 Oil
Heat treatment temperature /℃|tempering:    170~210
Hardness after annealing HBS≤:    197
Size /mm:    φ11
After surface hardening |σb/MPa:    980~1270
After surface hardening |σs≥/MPa:  785
After surface hardening |δ5(%)≥:   9
After surface hardening |ψ(%)≥:     35
After surface hardening |AKV①/J:   41
|size /mm:   φ30
|σb/MPa:    780~1080
|σs≥/MPa:  590
|δ5(%)≥:    10
|ψ(%)≥:     40
|AKV/J:       41
|σb/MPa:    690~930
|σs≥/MPa:  490
|δ5(%)≥:    11
|ψ(%)≥:     40
|AKV/J:       -
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on. 
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners,
Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut, Multidiameter shaft, Pressure vessel.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified engineers, E-mail:
sales@ccsteels.com

Hot search:21NiCrMo2

Previous page:1.6523
Last page:1.6526

Share to: