70Cr2 datasheet,70Cr2 chemical,70Cr2 heat treatment
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70Cr2
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Specifications 70Cr2 data sheet, 70Cr2 Chemical, 70Cr2 Properties from Steelmaking, ESR melted, Blooming, Hot forging % rolling, Heat treat, Straightening, 100% Ultrasonic test, Cold working or rough turned machining. Technical specifications - ISO 4597 - 2001. We also possess the advanced precision machining equipments for catering for your different special requirements.
MATERIAL DATA SHEET - DIN 70Cr2

MATERIAL CATEGORY - Cold work alloy tool steel 
MATERIAL SPECIFICATIONS - EN ISO 4957: 2000, DIN 17350
CHEMICAL COMPOSITION (WEIGHT %)
C (%):    0.65 ~ 0.70
Si (%):    0.15 ~ 0.30
Mn (%):  0.75 ~ 0.90
P (%)≤:  0.030
S (%)≤:  0.030
Cr (%):   0.55 ~ 0.70
Mo (%):  -
V (%):    -
AVAILABLE SHAPES
Round bar / flat bar / plate / tube / forge piece  
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working tenperature /℃: 1000 ~ 800
Annealing temperature /℃:  700 ~ 720
Hardness after annealing ≤HBW:  200
Quenching temperature /℃:  770 ~ 800
Cooling medium: water
Common tempering temperature /℃:  180~200
Hardness after tempering at temperature HRC|100℃:    66
Hardness after tempering at temperature HRC|200℃:    63
Hardness after tempering at temperature HRC|300℃:    57
Hardness after tempering at temperature HRC|400℃:    50
TYPICAL APPLICATIONS
Cutting tools
Mechanical parts
Air hammer tools
Piercing tools
PRODUCT DESCRIPTION
The alloy is usually produced by BEF / 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 softened condition.
Final heat treatment - heat treatment / QT 
PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 5.5 to 450mm
Steel strip: THK0.15 ~ 2.50 X W8.0 ~ 600mm
Flat bar (Thickness X width): 10 ~ 350 X 15 ~ 800mm 
Length: Fixed length or random length or based on the customer's special requirement.
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 engineers, Email:
sales@ccsteels.com

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