Durehete 1055
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MATERIAL DATA SHEET - Grade Durehete 1055
MATERIAL CATEGORY - BS EN 10269: 1999
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, or bright annealing specially.
Final heat treatment - heat treatment / QT 
Density (kg/m3): 7.83 at room temp.20 degreee C
MATERIAL SPECIFICATIONS - DIN EN 10083-2, DIN 17200 (1987), BS 4882
CHEMICAL COMPOSITION (mass weight % )      
Carbon, C (％):  0.17 ~ 0.23
Silicon, Si (％):  ≤ 0.40
Manganese, Mn (％):  0.35 ~ 0.75
Phosphorus, P (％)≤:  0.020
Sulfur, S (％)≤:  0.020
Chromium, Cr (％):  0.90 ~ 1.20
Molybdenum, Mo (％):  0.90 ~ 1.10
Nickel, Ni (%):  ≤ 0.20
Copper, Cu (％):  ≤ 0.20
Other(%): Al 0.015 ~ 0.080, B 0.001 ~ 0.010, V 0.60 ~ 0.80, Ti 0.07 ~ 0.15, As ≤0.020,.Sn ≤0.020
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Pre-treatment temperature /℃:    660～700
Heat treatment temperature /℃| annealing:     -
Heat treatment temperature /℃| Normalizing:  -
Heat treatment temperature /℃| Quenching:    970~990 Oil
Heat treatment temperature /℃| Tempering :   680~720
Hardness after annealing ≤HBS:   -
Steel dimension /mm:   100
Tensile strength, |σb≥/MPa:  820~1000
Yield strength, |σs≥/MPa:  660min.
Elongation, |δ5 ≥/(%):   15
Reduction of area, |ψ ≥/(%):     50
Impact strength, |AKv≥ /J:     40
Steel dimension /mm: 100<d<200
|σb≥/MPa:  820~1000
|σs≥/MPa:  660min.
|δ5≥/(%):   15
|ψ≥/(%):     50
|AKV≥/J:     27           
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 650mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Forging piece: stepped shafts, other different shapes based on OEM.
ADVANTAGE & SUPERIOR SERVICE
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email:sales@ccsteels.com