21CrMoV5-7 / 1.7709 Stockist, 21CrMoV5-7 / 1.7709 Equivalent Steel

21CrMoV5-7 / 1.7709
2015-11-28 16:49:35   Origin:   Remark:0 Click:

DIN EN 10028-2, DIN 17755 Specifications Steel 1.7709 Round bar 21CrMoV5-7 Plate, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test.
Official Test Certificate: issued by TUV - SGS -  BV

TECHNICAL DATA SHEET - Grade 21CrMoV5-7 & 1.7709
MATERIAL TYPE - High temperature alloy
steel 
MATERIAL STANDARDS: DIN EN 10028-2, DIN 17755
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (%):  0.17 ~ 0.25
Silicon, Si (%):  ≤ 0.40
Manganese, Mn (%):  0.40 ~ 0.80
Phosphorus, P (%)≤:  0.030
Sulfur, S (%)≤:  0.030
Chromium, Cr (%):  1.20 ~ 1.50
Nickel, Ni (%):  ≤ 0.60
Molybdenum, Mo (%):  0.55 ~ 0.80
Vanadium, V (%):  0.20 ~ 0.35
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Mechanical property ≥|σb/MPa: 700 ~ 850
Mechanical property ≥|σs/MPa: 550
Mechanical property ≥|δ5(%): 16.0
Mechanical property ≥|Akv /J: 69
Hardness after annealed HBW: 205~250
HOT WORKING & HEAT TREATMENT
Hot working temperature /℃: 1100~850
Heat treatment temperature/℃|annealing /℃: 650~730
Heat treatment temperature/℃|quenching /℃: 890~940 Oil or Air cooled
Heat treatment temperature/℃|tempering /℃: 680~720
PRODUCT DESCRIPTION
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, or bright annealing specially.
Final heat treatment - Quenched and Tempered     
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.
PRODUCT PROFILE & DIMENSIONS
Round bar / Disc (diameter): 5.5mm to 550mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 400mm X W100 ~ 1200mm X L1000 ~ 5000mm
Forging piece: stepped shafts, other different shapes based on OEM.
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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