SAE 9840 datasheet,SAE 9840 chemical,SAE 9840 heat treatment

SAE 9840
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Description AISI 9840 Supplier, Inventory SAE 9840 Stocklist, Ex-stock AISI 9840 Properties from Steel making, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working, Peeled or rough turned machining. Technical specification ASTM SAE J1249 -2000. We also possess the advanced precision machining equipments for catering for your different special requirements.
MATERIAL TECHNICAL DATASHEET - Grade SAE 9840
MATERIAL CATEGORY - SAE, AISI, UNS system alloy structural steel
MATERIAL SPECIFICATIONS - SAE J1249 -2000
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS BV
CHEMICAL COMPOSITION ( Mass weight % )
C (%):    0.38 ~ 0.43
Si (%):    0.20 ~ 0.35
Mn (%):  0.70 ~ 0.90
P (%)≤:  0.040
S (%)≤:  0.040
Cr (%):   0.70 ~ 0.90
Ni (%):   0.85 ~ 1.15
Mo (%):  0.20 ~ 0.30
MECHANICAL PROPERTIES AND HOT WORKING
Bar size: Diam.30mm
Mechanical property ≥ σb/MPa: 1240
Mechanical property ≥ σs/MPa: 1105
Mechanical property ≥ δ5 (%): 15.0
Mechanical property ≥ ψ (%): -
Hardness / QT COND: HB 361
MAIN FEATURES AND MELTING PROCESS
The steels
shall be manufactured by melting process EF, LF + EAF+ VD, IFF + ESR Melted. VIM + ESR can be handled by agreement.
Forgings may be furnished in one of the following conditions: stress relieving; annealing; solution treatment; solution treatment and ageing; normalizing; normalizing and tempering; or quenching and tempering.
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 rods
Mechanical parts - connecting rods, bolts and nuts
Multidiameter shafts

PROFILE AND DIMENSIONS
Round bar (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 800mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Heavy/middle plate via hot rolled: T40 - 400mm X W100 - 1000mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM requirement.
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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