20Cr4E datasheet,20Cr4E chemical,20Cr4E heat treatment

20Cr4E
2015-12-07 17:13:50   Origin:   Remark:0 Click:

Technical specification of ISO standards case hardening steel 20Cr4E datasheet,ISO 20Cr4E Chemical compositions,20Cr4E mechanical properties from Steelmaking,ESR melted,Blooming,Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working or rough turned machining. Technical specification - ISO 4954/93. We also possess the advanced precision machining equipments for catering for your different special requirements.
 
 
Official Test Certificate: issued by TUV - SGSBV

TECHNICAL SPECIFICATION / DATASHEET -  20Cr4E
MATERIAL TYPE: Cold heading & cold extruding
CATEGORY: case hardening
MATERIAL STANDARDS: ISO 4954
CHEMICAL COMPOSITION (WEIGHT %)
C (%):     0.17~0.23
Si (%):     0.40
Mn (%):   0.60~0.90
P (%)≤:   0.035
S (%)≤:   0.035
Cr (%):    0.90~1.20
Mo (%):   -
HEAT TREATMENT PRACTICE
Carburizing temperature /℃: 880~980
Hardening temperature /℃:   820~860
Second hardening temperature - surface temperature /℃: 860~900
Tempering temperature /℃: 150~200
MECHANICAL PROPERTIES
Diameter = /size mm: 16
Mechanical property ≥|σs/MPa:     550
Mechanical property ≥|σb/MPa:     820~1170
Mechanical property ≥|δ5(%):       9
Mechanical property ≥|AkU /J:       25
Diameter = /size mm: 30
Mechanical property ≥|σs/MPa:     490
Mechanical property ≥|σb/MPa:     750~1100
Mechanical property ≥|δ5(%):       9
Mechanical property ≥|AkU /J:       25
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 IFF /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 / 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, seamless pipe
PRODUCT PROFILE
Round bar / Wire rod (Diameter):  0.50mm to 800mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200mm X W1000- 2500mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.  

TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineer.
- Email:
lh.steel@hotmail.com
 
 

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