D4A datasheet,D4A chemical,D4A heat treatment

D4A
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Description D4A datasheet, D4A Chemical, D4A Properties Steelmaking, Blooming, Hot forging, Hot rolling, Heat treat, 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 SPECIFICATIONS - AMS 6432A & D4A
MATERIAL FORM: Bar, Forge piece, Tube
TECHNIQUE AND QUALITY: -
MATERIAL TYPE: Aerospace Material Specification - Structural steel
Official Test Certificate Report: issued by TUV - SGS -  BV
CHEMICAL COMPOSITION (WEIGHT %)
C (%):   0.43 ~ 0.49
Si: (%): 0.15 ~ 0.35
Mn (%): 0.60 ~ 0.90
Cr (%):  0.90 ~ 1.20
Ni (%):  0.40 ~ 0.70
Mo (%): 0.90 ~ 1.10
V (%):   0.05 ~ 0.15
TYPICAL MECHANICAL PROPERTY
Tensile strength σb≥/MPa: 1471
Yield strength σs≥/MPa: 1373
Elongation δ5≥(%): 9.0
Impact, AKV≥/J: 35 
Annealed hardness HB: 45HRC
PRODUCT DESCRIPTION
The
alloy is usually produced by VM /CVM followed by electroslag refining (ESR), Vacuum Arc Melting (VAR) if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' specific requirements.
Round bar / Wire rod (Diameter)  0.10mm to 300mm
Square bar / Flat bar: 3mm to 400mm
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.
MAIN STEEL GRADE FOR EXPORT MARKET
ASTM A565 Grade 616/422/S42200, Grade 615/S41800, XM-32/S64152, PH13-8/XM-13/s13800
17-4PH/630/1.4542, 631, 851, 961, WB36, D6-AC, D6A. A-286/660
1.4980, 1.4922, 1.4923, 1.4935, 1.4938, 1.4913, 1.4122
Forms: Bars, Forge piece, Ring, Strip
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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