21CrMoV5-7 DIN 1.7709 Forged Alloy Steel Bar
- Price
- US $1600
- Model
- 21CrMoV5-7 DIN 1.7709 forged bar
- MOQ
- 1 metric ton
Item specifics
- Steel grade
- 21CrMoV5-7 DIN 1.7709
- Applications
- Heavy Duty Shafts, Gears, Axles, Spindles, Couplin
- Heat treatment
- Normalized,Quenching and Tmenpering
- Surface condition
- Black or bright surface
- Standard
- ASTM A26
Review
Description
PRODUCT DESCRIPTION
Alloy structural steel is provided with higher yield strength, tensile strength, endurance strength, yield ratio (about 0.85 generally ) enough plasticity and toughness.The concentration of alloy element of this kind of steel is quite high, mainly are corrosion resistant steel, heat resistant steel, wear resistant steel, and other special steels of physical and chemical properties. Alloy structural steel has preferable mechanical property than that of carbon structural steel, high performance of heat treatment especially.The alloy is usually produced by EAF /VD /LF followed by electroslag refining (ESR) if necessary for special purpose.Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.Bars are usually supplied bright in the annealed condition.Final heat treatment - heat treatment / QT
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. Mechanical gears, gear shaft, main axis, valve rodMechanical parts - connecting rod, bolt and nutMultidiameter shaftPressure vessel, seamless pipe
PRODUCT PROFILE
Round bar / Wire rod (Diameter) 0.50mm to 800mmSquare bar / Flat bar: 3mm to 1000mmPlate / Sheet steel / Steel strip: 0.1mm to 1000mmWidth: 8mm to 2500mmLength: random length or based on the customer's special requirement.Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
21CrMoV5-7 Chemical composition
C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | V(%) |
0.17~0.25 | 0.15~0.35 | 0.35~0.85 | ≤0.030 | ≤0.035 | 1.20~1.50 | 0.65-0.80 | 0.25~0.35 |
21CrMoV5-7 steel MECHANICAL PROPERTIES
Hot working temperature /℃: | 1100~850 |
Heat treatment temperature /℃|annealing / normalizing: | 650~730 |
Heat treatment temperature /℃|quenching: | 890~940(Oil or Air) |
Heat treatment temperature /℃|tempering: | 680~720 |
HBW: 205~250 | 205~250 |
Tensile strength, (≥)|σb/MPa: | 700~850 |
Yield strength, (≥)|σs/MPa: | 550 |
Elongation, (≥)|δ5(%): | 16 |
Impact, (≥)|AKV/J: | 69 |