China SAE 4140 1.7225 Scm440 42CrMo Cold Drawn Steel Bar Shaft

SAE 4140 / 1.7225 / SCM440 / 42CRMO Cold Drawn Steel bar / Shaft
1.4140 Cold drawn bar processing
AISI 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength.
Processing for 4140 steel should be Annealed before cold drawn, and packed by anti-rust packings.
2.Equivalent grades for 4140 steel
AISI 4140 equivalent material
♦JAPAN♦ : JIS SCM440 alloy steel
♦GERMANY♦ : DIN WN-r 1.7255 / 42CrMo4 steel alloy
♦CHINA♦ : GB 42CrMo steel
♦BRITISH♦ : BS 708M40
3.Chemical comoistion for 4140 scm440 42cr en19 steels

ASTM A29/29MCSiMnCrMoPS41400.38~0.430.15~0.350.75~1.000.80~1.100.15~0.25≤0.035≤0.040DIN WN-rCSiMnCrMoPS1.72250.38~0.45 ≤0.400.60~0.900.90~1.200.15~0.30≤0.035≤0.035GB/TCSiMnCrMoPS42CrMo0.38~0.450.17~0.370.50~0.800.90~1.200.15~0.25≤0.030≤0.030BSCSiMnCrMoPS708M400.36~0.440.10~0.350.70~1.000.90~1.200.15~0.25≤0.035≤0.035JISCSiMnCrMoPSSCM4400.38~0.430.15~0.350.60~0.850.90~1.200.15~0.30≤0.030≤0.030

4.Applications
DIN 4140 steel is a alloy structural steel, 4140 is used for engineering structural, like high tensile shafts, bolts and nuts, gears, pinions and spindles. Locomotive traction with the big gear, supercharger drive gear, pressure vessel, rear axle, gear load of connecting rod and a spring clip,4140 can also be used to under 2000 m deep well of oil drill pipe joint and the fishing tool, and can be used for bending machine mould, etc
5.Supply Size range
Hot Rolled 4140 steel bar: Ø16mm-310mm
Forging 4140 steel bar: Ø250mm-1000mm
Cold drawn 4140 steel bar:Ø12-100mm
Q&T 4140 steel bar:Ø16-310mm
6.Quality control
1.Processing Line:
Iron - hot metal pretreatment - Converter - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
Electric Furnace - Refining --VD / RH- - Continuous Casting - Hot Rolling (KOCKS) - heat --UT Check - Processing and Distribution Center
2.Gas content level:O2 - <20 ppm H2 - <2 ppm N2- <100 ppm
3.Grain Sizes:5-8
4. non-metallic inclusions contorlling level

ABCD MAXMAXMAXMAXThin2222Thick1111

7.MOQ for AISI 4140 cold drawn steel bars: one bundle for each size.
8.Payment term:TT,LC,Cash or others which is convenient to you
9.Delivery time : Generally 7-10 days for stocks and one month for new production
10.Cold drawn steel bar products tolerance: h9,h10,h11 or as required
11.Our cold drawn steel bar surface :Surface bright and with good tolerance

12.Our cold drawn workshop
Equipments such as :
shot blasting machine, cold drawn machine, Annealing machine, Q&T machine, packing machine, cranes, and inspection machines.

13.Packing and Delivery for cold drawn steel bars
Surface should be oiled ,and then around one ton one bundle, packed by strong plastic firm and wooven cloth.