21CrMoV5-7 datasheet,21CrMoV5-7 chemical,21CrMoV5-7 heat treatment

21CrMoV5-7
2014-10-21 08:46:04   Origin:   Remark:0 Click:

Description 21CrMoV5-7 Round bars, Stocklist 21CrMoV5-7 Wire rod, Inventory 21CrMoV5-7 Shaft Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test & Magnetic powder inspection, Cold working, Peeled or rough turned machining. 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
MATERIAL STANDARDS DATASHEET - Grade 21CrMoV5-7
MATERIAL CATEGORY - High temperature structural steel 
MATERIAL SPECIFICATIONS - DIN EN 10028-2 (2003), DIN 17755 (1983) 
MELTING PROCESS - Consumable electrode remelted steel
H S CODE For Customs - 7228 4000 / 7228 5000 / 7228 6000
OFFICIAL TEST REPORT - issued by TUV - SGS -  BV
CHEMICAL COMPOSITIONS (Mass Weight - %)
C (%):     0.17 ~ 0.25
Si (%):     ≤ 0.40
Mn (%):   0.40 ~ 0.80
P (%)≤:   0.030
S (%)≤:   0.030
Cr (%):    1.20 ~ 1.50
Mo (%):   0.55 ~ 0.85
Ni (%):    ≤ 0.60
V (%):     0.20 ~ 0.35
Others (%):  Al ≤ 0.030
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
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
Delivery hardness /HBW: 205 ~ 250
Tensile strength, (≥)|σb/MPa: 700 ~ 850
Yield strength, (≥)|σs/MPa: 550
Elongation, (≥)|δ5(%): 16.0
Impact strength,  (≥)|AKv/J: 69            
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Yield strength σ0.2≥/MPa|200℃:    500
Yield strength σ0.2≥/MPa|300℃:    460
Yield strength σ0.2≥/MPa|350℃:    441
Yield strength σ0.2≥/MPa|400℃:    412
Yield strength σ0.2≥/MPa|450℃:    372
Yield strength σ0.2≥/MPa|500℃:    334
AVAILABLE SHAPES  
Round bar / flat bar / square bar / Tube / Steel strip / Sheet / forged valve
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
PROFILE & DIMENSIONS  
Round bar / Wire rod (Diameter): 5.5mm to 550mm
Square bar / Flat bar: 10mm to 610mm
Plate / Sheet steel / Steel strip: 3.0mm to 400mm
Width: 8mm to 1000mm
Length: 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.
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 rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft and pressure vessel.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical inquiry, pleased to EMAIL (
sales@ccsteels.com) our resident team of qualified production engineers.

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