JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

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Forged Steel 42CrMoA OD 14" 360MM Pin Puller Main Steel Round Rod Surface Machined Grinded

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Province/State:jiangsu
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Forged Steel 42CrMoA OD 14" 360MM Pin Puller Main Steel Round Rod Surface Machined Grinded

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Brand Name :TSING SHAN
Model Number :4140 42CrMo
Certification :ISO SGS MTC
Place of Origin :China
MOQ :100KGS
Price :0.55-1.05 USD/KG
Payment Terms :L/C, T/T
Supply Ability :50000KGS
Delivery Time :7 Days
Packaging Details :Export Packing
Stock :Yes
Steel Grade :Alloy Steel 42CrMoA
Din Standard :EN 10084 : 2008
Dimensions :8-1500mm
Origin :China
Product :Steel Round Bar
Alloy Or Not :Is Alloy
Strength :High
Loading Port :Shanghai Port
Corrosion Resistance :Yes
Surface Finish :Polished
Type :Round Flat
Application :Machinery, Construction, Automotive, etc.
Physical Properties :Specific Gravity 7.85
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Forged Steel 42CrMoA OD 14" 360MM Pin Puller Main Steel Round Rod Surface Machined Grinded

Product Description

42CrMo 42CrMoA 4140 Rolled Forged Round Steel Bar
Alloy structural steel: 4140
Executive standard: ASTM a29 / a29m-04
ISO Grade is 42CrMo4
Japanese Grade: scm440
German Grade: 42CrMo4
American Grade: 4140
British BS 708m40 / 708a42 / 709m40
Characteristic:
4140 steel, this steel has good workability, small deformation, good fatigue resistance. It belongs to medium hardenability steel. After heat treatment, 4140 has good strength and good comprehensive mechanical properties, good processability and high yield. The maximum service temperature is 427 ºC. 4140 has high strength, hardenability, good toughness, small deformation during quenching, and high creep strength and rupture strength at high temperature. It can be used to manufacture forgings with higher strength and larger quenched and tempered section than 35CrMo steel, such as big gear for locomotive traction, transmission gear for supercharger, rear shaft, connecting rod and spring clip with great load, as well as drill pipe joint and fishing tool for oil deep well below 2000m, and bending machine.
Quick Details

1: 4140 steel introduction
AISI SAE 4140 alloy steel is a chromium molybdenum alloy steel specification widely used in general purpose high tensile steel for components, like axles, shafts, bolts, gears and other applications. Similar to alloy grade AISI 4130 chrome moly alloy steel but with a slightly higher carbon content. The higher carbon content of AISI 4140 steel gives greater strength and heat treatment capabilities in comparison to AISI / ASTM 4130 alloy steels, however it does have inferior weldability characteristics..

2: 4140 Steel equivalent
Country Japan Germany Britain USA China Australia
Standard JIS G4105 DIN 17200 BS970 ASTM A29 GB/T 3077 AS 1444
Grade SCM440 42CrMo4/1.7225 EN19/709M40 4140 42CrMo 4140

3: 4140 steel chemical composition
Grade C Si Mn P S Cr Mo Ni
4140 0.38-0.43 0.15-0.35 0.75-1.0 0.035 0.04 0.8-1.1 0.15-0.25
42CrMo4 0.38-0.45 0.4 0.6-0.9 0.035 0.035 0.9-1.2 0.15-0.3
EN19 0.35-0.45 0.1-0.35 0.5-0.8 0.05 0.05 0.9-1.5 0.2-0.4
SCM440 0.38-0.43 0.15-0.35 0.6-0.85 0.03 0.03 0.9-1.2 0.15-0.3

4: 4140 steel mechanical properties

The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.

5: 4140 steel overviews
Size Round Dia 6-1200mm
Plate/Flat/Block Thickness
6mm-500mm
Width
20mm-1000mm
Heat treatment Normalized ; Annealed ; Quenched ; Tempered
Surface condition Black; Peeled; Polished; Machined; Grinded; Turned; Milled
Delivery condition Forged; Hot rolled; Cold drawn
Test Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc.
Payment terms T/T;L/C;/Money gram/ Paypal
Trade terms FOB; CIF; C&F; etc..
Delivery time 30-45 days
Application 4140 alloy steels are used for Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc..

6. Heat Treatment

Annealing
Heat ASTM 4140 steels to 800 oC - 850 oC, hold until temperature is uniform throughout the section and cool in furnace.
Normalizing
Heat steel alloy 4140 to 870 oC - 900 oC, hold until temperature is uniform throughout the section, soak for 10 - 15 minutes and cool in still air.
Tempering
Re-heat 4140 grade steel to 550 oC - 700 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.
Hardening
AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.

SAE 4140 alloy steel is usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 oC - 875 oC, hold until temperature is uniform throughout the section, soak for 10 - 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.

7: Delivery condition
For hot forged bar, usually the delivery condition is hot forged, annealed/QT, rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
For hot forged block, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface
For hot rolled plate, usually the delivery condition is hot rolled, annealed/QT, black surface.
For cold drawn bar, usually the delivery condition is cold drawn, annealed/QT, peeled/black surface
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Forged Steel 42CrMoA  OD 14Forged Steel 42CrMoA  OD 14Forged Steel 42CrMoA  OD 14

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