1.2739 datasheet,1.2739 chemical,1.2739 heat treatment

1.2739
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Description 1.2739 datasheet, 1.2739 Chemical, 1.2739 Properties from Steelmaking, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic flaw detection test, Cold working or Machined. All of these materials conform to Military standard, nuclear power. 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
TECHNICAL DATA SHEET - DIN 1.2739

MATERIAL CATEGORY: Cr0.65 - Mo0.4 - V0.1 series steel
MATERIAL SPECIFICATIONS - BS 4659-1989
CHEMICAL COMPOSITIONS (WEIGHT - %)
C (%):     0.37 ~ 0.43
Si (%):     1.30 ~ 1.60
Mn (%):   0.30 ~ 0.90
P (%)≤:   0.030
S (%)≤:   0.025
Cr (%):    0.50 ~ 0.80
Ni (%):     0.70 ~ 1.00
Mo (%):   0.30 ~ 0.45
V (%):     0.07 ~ 0.12
HEAT TREATMENT PRACTICE AND HARDNESS
Annealed hardness, ≤ HB: 255
Annealing temperature /℃: 820 ~ 850
Cooling medium: Oil or Air
MELTING PROCESS
This
alloy is generally smelt in Non-vacuum furnace + ESR, Electric Arc Furnace (EAF).
For a purpose of superior quality, it should be smelt via technology of Electroslag remelting or vacuum refining or by agreement.

PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 5.5 to 430mm

Steel strip: THK0.15 ~ 2.50 X W8.0 ~ 610mm
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 o
ur resident team of qualified production engineers, Email:
sales@ccsteels.com.

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Previous page:SAE 30304
Last page:1.2007

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