Guangdong, China
Business Type:
Trading Company
Main Products:
Management System Certification:
ISO 9001, ISO 9000, IATF16949
Export Year:
2012-11-11
Main Markets:
Southeast Asia/ Mideast
OEM/ODM Service
Sample Available

4140 round bar, SCM440 round bar, alloy round steel manufacturer / supplier in China, offering Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery, 1.2311 P20 718 Alloy Steel Plate Flat Round for tools and dies, D2 SKD11 1.2379 Cr12Mo1V1 Cold Work Steel Tool Steel Round Bar and so on.

Gold Member Since 2015
Audited Supplier
Supplier Homepage Products Mechanical Alloy Steel Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
  • Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
  • Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
  • Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
  • Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
  • Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
  • Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery

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

Get Latest Price
Purchase Qty. / Reference FOB Price
3-9 Tons US $1,100
10+ Tons US $950
Port: Shenzhen, China
Production Capacity: 1000t/Month
Payment Terms: L/C, T/T
Type: Alloy Steel Bar
Standard: AISI, GB, JIS, DIN
Technique: Hot Rolled
Application: Structural Steel Bar
Surface Treatment: Polished
Alloy: Alloy

You Might Also Like

Loading...

Basic Info

Model NO.
1.7225/SAE4140/SCM440/42CrMo
Special Use
Mold Steel
Shapes Option
ROUND/FLAT
Process Tech.
Hot rolled/forged
Heat Treatment
Annealed/Q+T
Surface conditons
machined/scaling/polished/bright
Quality Assurance
100% UT passed
Payment Terms
TT/LC
Delivery Time
15-20days for stock
Trademark
customized
Transport Package
Standard/Customized
Specification
standard/customized
Origin
China
HS Code
7225401000
Q+T Alloy Steel Round Bar 1.7225/SAE4140 For Machinery

Product Introduction

AISI 4140 Steel Bar, Steel Plate, Flats Supplier, Stockist and Exporter. 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.

Equal Grades(numbers)
CountryUSAGermanBritishJapanChinaAustralia
StandardASTM A29DIN 17200BS 970JIS G4105GB/T 3077AS 1444
Grades41401.7225/
42crmo4
42CrMo4SCM44042CrMo4140
Chemical Composition
StandardGradeCMnPSSiNiCrMo
ASTM A2941400.38-0.430.75-1.000.0350.0400.15-0.35-0.8-1.100.15-0.25
EN 1025042CrMo4/
1.7224
0.38-0.450.6-0.90.0350.0350.4-0.9-1.20.15-0.30
JIS G4105SCM4400.38-0.430.60-0.850.030.030.15-0.35-0.9-1.20.15-0.30
Mechanical PropertiesMetricImperial
Tensile strength655 MPa95000 psi
Yield strength415 MPa60200 psi
Bulk modulus (typical for steel)140 GPa20300 ksi
Shear modulus (typical for steel)80 GPa11600 ksi
Elastic modulus190-210 GPa27557-30458 ksi
Poisson's ratio0.27-0.300.27-0.30
Elongation at break (in 50 mm)25.70%25.70%
Hardness, Brinell197197
Hardness, Knoop (converted from Brinell hardness)219219
Hardness, Rockwell B (converted from Brinell hardness)9292
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)1313
Hardness, Vickers (converted from Brinell hardness)207207
Machinability (based on AISI 1212 as 100 machinability)6565

Forging
Preheat the steel carefully, heat to 1150 oC - 1200 oC maximum, hold until temperature is uniform throughout the section.
Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.

 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.

Application

ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140 tool steel uses include 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.
Welcome customers to inquiry AISI 4140 steel bar, plate, flat steel for the 4140 steel price. We are professional supplier and exporter for more than 20 years. We offer you worldwide solution for aisi alloy 4140 steel bar.


Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
Available Sizes in Stock 
Steel GradeDiameter(mm)Length(mm)Harness(HRC)
SCM440/SAE414016,18,20,23,25,28,30,33,35,38,40,43,45,48,50,                                                             55,60,65,70,75,80,85,90,95,100,110,120,130,140,               150,160,170,180,190,200,210,220,230,240,250,260,                            270,280,290,300,310,320,330,340,350,360,370,380,    390,400,410,420,430,440,4504000-10000HB160-220
More Picutres
Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
Workshop
Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
Company Profile:

Guangzhou Changfeng Steel Co., Ltd is an export company of Baogang group in south China specialized in exporting special steel, which contains Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Steel for Mechanical, High Speed Steel, Bearing Steel, Tool Steel, Stainless Steel, Carbon Steel, etc. 

We also act on behalf of exporting steels of mainly steel factories in China, including Shagang group, Wenfeng group, Xingcheng group, Dongte group, Daye and so on. We are full of ten years export experience to the market all over the word, such as America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and middle-east. 

Guangzhou Changfeng Steel Co., Ltd has rich experience and competent elites, which enable us to offer the best service after years of development. Our company equips with large-sized vertical saw machines, horizontal saw machines, milling machines, grinding machines and other advanced equipments to provide customers with cutting and other processing services. We set up strict inspection procedures, including metallographic analysis, hardness test, ultrasonic flaw detection etc., in order to meet the standards of DIN, AISI, JIS and GB to ensure their function and quality. 

Our company keeps the principle of "sincerely cooperation, endless striving for perfection". We desire to establish the long-term mutual beneficial and win-win relationship with importers all over the word.


Quality Inspection
Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery
Warehouse
Q+T Alloy Steel Round Bar1.7225/SAE4140 For Machinery

Our service
We provide quality die & tool steel in stock for all industries.
Orders of any size, any length, ship fast
Provide related value-adding services :
metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.
Sawing for small or large quantities, sawing-to-size.
Excellent customer service
Contact Us
Contact us for the latest price and more details NOW!
 

Send your message to this supplier

*From:
*To:
avatar Mrs. Helen Xie
*Message:

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now