Q+T Alloy Steel Round Bar1.7225 SAE4140 For Machinery

Q+T Alloy Metal Spherical Bar one.7225/SAE4140 For CZPT

Item Introduction
AISI 4140 Steel Bar, Metal Plate, Flats Supplier, Stockist and Exporter. AISI SAE 4140 alloy metal is a chromium molybdenum alloy steel specification widely utilised in general objective substantial tensile metal for parts, like axles, shafts, bolts, gears and other applications. Similar to alloy quality AISI 4130 chrome moly alloy metal but with a somewhat increased carbon content material. The higher carbon content of AISI 4140 metal gives better energy and heat remedy capabilities in comparison to AISI / ASTM 4130 alloy steels, even so it does have inferior weldability qualities.

Equivalent Grades(quantities)

Country United states German British Japan China Australia
CZPT ASTM A29 DIN 17200 BS 970 JIS G4105 GB/T 3077 AS 1444
Grades 4140 one.7225/
42CrMo4 SCM440 42CrMo 4140

Chemical Composition

CZPT Grade C Mn P S Si Ni Cr Mo
ASTM A29 4140 .38-.forty three .seventy five-one.00 .035 .040 .15-.35 .8-1.ten .15-.25
EN 15710 42CrMo4/
.38-.45 .6-.9 .035 .035 .four .9-1.2 .fifteen-.thirty
JIS G4105 SCM440 .38-.43 .60-.eighty five .03 .03 .15-.35 .9-1.two .15-.30

Mechanical Houses Metric Imperial
Tensile power 655 MPa 95000 psi
Yield strength 415 MPa 65710 psi
Bulk modulus (standard for steel) one hundred forty GPa 20300 ksi
Shear modulus (common for metal) 80 GPa 11600 ksi
Elastic modulus a hundred ninety-210 GPa 27557-three 0571 ksi
Poisson’s ratio .27-.30 .27-.thirty
Elongation at crack (in 50 mm) twenty five.70% twenty five.70%
Hardness, Brinell 197 197
Hardness, Knoop (converted from Brinell hardness) 219 219
Hardness, Rockwell B (converted from Brinell hardness) ninety two ninety two
Hardness, Rockwell C (converted from Brinell hardness. Price beneath normal HRC assortment, for comparison functions only) thirteen 13
Hardness, Vickers (transformed from Brinell hardness) 207 207
Machinability (based mostly on AISI 1212 as 100 machinability) sixty five 65

Preheat the steel cautiously, warmth to 1150 oC – 1200 oC optimum, hold until temperature is uniform through the segment.
Do not forge beneath 850 oC.Following forging operation the operate piece need to be cooled as slowly and gradually as attainable.

 Heat Remedy

  • Annealing
    Heat ASTM 4140 steels to 800 oC – 850 oC, maintain right up until temperature is uniform all through the segment and great in furnace.
  • Normalizing
    Heat steel alloy 4140 to 870 oC – 900 oC, maintain until temperature is uniform all through the section, soak for ten – 15 minutes and great in nevertheless air.
  • Tempering
    Re-warmth 4140 grade metal to 550 oC – 700 oC as essential, hold until temperature is uniform all through the part, soak for 1 hour per 25 mm of part, and amazing in still air.


AISI alloy 4140 metal bar, plate and sq. can be hardened by cold operating, or heating and quenching.
SAE 4140 alloy metal is generally equipped ready heat treated to hardness in eighteen-22 HRC. If more heat remedy is necessary, then heat to 840 oC – 875 oC, hold right up until temperature is uniform during the section, soak for ten – 15 minutes per twenty five mm segment, and quench in oil, water, or polymer as necessary.


ASTM alloy 4140 metal bar, flat or plate materials can be employed for as extensive variety of apps exactly where increased toughness and wear resistance is essential more than reduce carbon grades. Standard apps for 4140 tool steel uses contain Factors, Adapters, Arbors,strippers, holder blocks, mould bases, ejectors, back again 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, equipment racks, chain back links, spindles, device bodies, device holders, tie rods, Link Rods, Chuck Bodies, Collets, CZPT Pins & Rolls, Ejector Pins, Forks, Gears, Xihu (West Lake) Dis. Rods, CZPT Shafts & Components,Lathe Spindles, Logging Elements, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,uninteresting bars,tracks, slides, dress in strips or components, forming dies, brake dies, trim dies, bolsters, equipment areas and components, and so on.
Welcome consumers to inquiry AISI 4140 steel bar, plate, flat metal for the 4140 steel price. We are skilled supplier and exporter for much more than 20 a long time. We supply you CZPT resolution for aisi alloy 4140 metal bar.

Offered Dimensions in Stock 

Steel Grade Diameter(mm) Size(mm) Harness(HRC)
SCM440/SAE4140 16,18,twenty,23,25,28,thirty,33,35,38,forty,forty three,forty five,48,50,                                                             55,60,65,70,75,80,85,90,ninety five,100,110,one hundred twenty,a hundred thirty,140,               150,160,170,a hundred and eighty,one hundred ninety,200,210,220,230,240,250,260,                            270,280,290,300,310,320,330,340,350,360,370,380,    390,four hundred,410,420,430,440,450 4000-ten thousand HB160-220

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Company Profile:
HangCZPT Xihu (West Lake) Dis. Steel Co., Ltd is an export business of Baogang team in south China specialized in exporting special steel, which consists of CZPT Mould Steel, Very hot Operate Mould Metal, Cold Work Mould Steel, Alloy Metal for Mechanical, Higher Velocity Steel, CZPT Metal, Tool Metal, Stainless Metal, Carbon Steel, and many others. 

We also act on behalf of exporting steels of mostly metal factories in China, like Shagang team, Xihu (West Lake) Dis. team, HangCZPT team, Xihu (West Lake) Dis.te group, HangCZPT and so on. We are complete of 10 many years export experience to the market place all over the phrase, this sort of as The us, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, ZheJiang , and middle-east. 

HangCZPT Xihu (West Lake) Dis. Steel Co., Ltd has abundant expertise and competent elites, which empower us to provide the ideal provider right after years of growth. Our business equips with large-sized vertical observed devices, horizontal observed equipment, milling devices, grinding equipment and other superior equipments to offer buyers with cutting and other processing solutions. We established up stringent inspection processes, including metallographic examination, hardness test, ultrasonic flaw detection and so forth., in get to meet up with the specifications of DIN, AISI, JIS and GB to make sure their perform and high quality. 

Our company retains the theory of “sincerely cooperation, limitless striving for perfection”. We need to build the long-term mutual advantageous and acquire-earn partnership with importers all over the word.

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We give quality die & resource metal in inventory for all industries.
Orders of any size, any length, ship quickly
Supply associated price-incorporating services :
metallic chopping, sizing, machining (blanking, milling, grinding), and warmth remedy.
Sawing for modest or big quantities, sawing-to-dimension.
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Q+T Alloy Steel Round Bar1.7225 SAE4140 For Machinery