Sign In | Join Free | My fnxradio.com
fnxradio.com
Products
Search by Category
Home > Steel Round Bars >

Black Surface SCM440 Forged Tool Steel Round Bar

Categories Alloy Tool Steel
Brand Name: takford
Model Number: 4140/42crmo/scm440/1.7225
Place of Origin: china
MOQ: 1 pieces
Price: USD 1-2/KG
Payment Terms: L/C, T/T, Western Union
Supply Ability: 1000 TONS PER MONTH
Delivery Time: 5-8 DAYS
Packaging Details: Standrad export seaworthy package/ wooden box package
products name: Hot Rolled 42crmo Alloy Steel Round Bar For Bolts Making With Turned SurfaceSCM440 Forged tool steel round bar 300mm diameter black surface
technology: forged
steel grade: 4140/42crmo/scm440/1.7225
shape: steel round bar
surface: black
application: machine, industry
  • Haven't found right suppliers
  • Our buyer assistants can help you find the most suitable, 100% reliable suppliers from China.
  • And this service is free of charge.
  • we have buyer assistants who speak English, French, Spanish......and we are ready to help you anytime!
Submit Buying Request
  • Product Details
  • Company Profile

Black Surface SCM440 Forged Tool Steel Round Bar


SCM440 Forged tool steel round bar 300mm diameter black surface


1. 4140 alloy steel is a 1% chromium - molybdenum medium hardenability general purpose high tensile steel - generally supplied hardened and tempered in the tensile range of 850 - 1000 Mpa (condition T).4140 is now available with improved machinability, which greatly increases feeds and/or speeds, while also extending tool life without adversley affecting mechanical properties.

Pre hardened and tempered 4140 can be further surface hardened by flame or induction hardening and by nitriding.

4140 is used extensively in most industry sectors for a wide range of applications such as:

Adapters, Arbors, Axle Shafts, Bolts, Crankshafts, 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, Pins Various, Pinions, Pump Shafts, Rams, Sockets, Spindles, Sprockets, Studs, Tool Holders, Torsion Bars, Worms etc..


2. Common 4140 Steel Specifications

CountryUSAGermanBritishJapanChinaAustralia
StandardASTM A29DIN 17200BS 970JIS G4105GB/T 3077AS 1444
Grades41401.7225/
42crmo4
42CrMo4SCM44042CrMo4140

3. 4140 Steel Bar Chemical Composition

StandardGradeCMnPSSiNiCrMo
ASTM A2941400.38-0.430.75-1.000.0350.0400.15-0.350.8-1.100.15-0.25
EN 1025042CrMo4/
1.7225
0.38-0.450.6-0.90.0350.0350.40.9-1.20.15-0.30
JIS G4105SCM4400.38-0.430.60-0.850.030.030.15-0.350.9-1.20.15-0.30

4. Mechanical Properties of AISI Alloy 4140 Steel Bar, Plates, Square

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

5. 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.


Quality Black Surface SCM440 Forged Tool Steel Round Bar for sale
Send your message to this supplier
 
*From:
*To: DONGGUAN MISUNG MOULD STEEL CO.,LTD
*Subject:
*Message:
Characters Remaining: (0/3000)
 
Inquiry Cart 0