21CrMoV5-11 / 1.8070 datasheet,21CrMoV5-11 / 1.8070 chemical,21CrMoV5-11 / 1.8070 heat treatment

21CrMoV5-11 / 1.8070
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Description 21CrMoV5-11 Inventory, Suppliers 1.8070 Round bar, Ex-stock 21CrMoV5-11 property Steelmaking, ESR melted, hot blooming, Hot forging, Hot rolling, Heat treat, Straightening, 100% Ultrasonic test, Cold working or Machined. Technical specification - DIN 10028-2. We also possess the advanced precision machining equipments for further processing. Please just let us know what you inquire.
TECHNICAL DATA SHEET - Grade 21CrMoV5-11 & 1.8070

MATERIAL TYPE - High temperature alloy steel 
MATERIAL STANDARDS - DIN EN 10028-2, DIN 17755
Official Test Certificate - issued by TUV - SGSBV
CHEMICAL COMPOSITION (Mass weight - %)
Carbon, C (%):             0.17 ~ 0.25
Silicon, Si (%):              0.30 ~ 0.60
Manganese, Mn (%):   0.40 ~ 0.80
Phosphorus, P (%)≤:    0.035
Sulfur, S (%)≤:              0.035
Chromium, Cr (%):       1.20 ~ 1.50
Nickel, Ni (%):               ≤ 0.60
Molybdenum, Mo (%):  1.00 ~ 1.20
Vanadium, V (%):         0.25 ~ 0.35
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Mechanical property ≥|σb/MPa: 690 ~ 830
Mechanical property ≥|σs/MPa: 540
Mechanical property ≥|δ5(%): 16.0
Mechanical property ≥|Akv /J: 55.0
Hardness after annealed HBW: 205 ~ 250
HOT WORKING & HEAT TREATMENT
Hot working temperature /℃: 1100~850
Heat treatment temperature/℃|annealing /℃: 650~740
Heat treatment temperature/℃|quenching /℃: 900~950 Oil or Air cooled
Heat treatment temperature/℃|tempering /℃: 680~740
PRODUCT DESCRIPTION
High room and elevated temperature strength.Good creep.
High notch tolerance.
Thermal expansion coefficients compatible with low alloy steel turbine casing materials.
Lower design and operating risks
Simplified design for bolting configuration compared with martensitic steels or high nickel alloys.
Proven performance in long-term service.
Extensive database of long term, high temperature test results.
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, or bright annealing specially.
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.
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, seamless pipe
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (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 - 200mm X W60 ~ 1000mm X L1000 ~ 4000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL (sales@ccsteels.com ) our resident team of qualified production engineers.

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