4140 Round Bar Full Size Stock-ASTM A29

4140 steel, as a Cr-Mo series low-alloy structural steel, is widely used in many industries due to its excellent strength, toughness, wear resistance, impact resistance and high fatigue resistance.

4140 steel is usually delivered in a pre-hardened(PH)condition, that is QT, quenched and tempered,and its pre-hardened hardness is usually between 28-34HRC.

4140 pre hardened bright bar

Raw Material-4140 Round Steel Full Size Stock

  • 4140 Hot Rolled Round Steel
Diameter,mmLength,mmTolerance,mmSurface ConditionHeat Treatment
Φ14-Φ100Fixed,5800 or 6000-0/+0.5mm
BlackN/A
Φ105-Φ190Fixed,5800 or 6000-0/+1mm
BlackN/A
Φ200-Φ250Fixed,5800 or 6000 or 8000-0/+1mm
BlackN/A
Φ260-Φ350Fixed,5800 or 6000-0/+2mm
BlackN/A

Remark:Length can be customized as per requests

4140 Hot-rolled Round Steel-Available Stock Size

Diameter,mm Φ14Φ16Φ18Φ19Φ20Φ21Φ25Φ27Φ28Φ30
Stock status
Diameter,mm Φ32Φ33Φ35Φ40Φ45Φ46Φ50Φ52Φ55Φ60
Stock status
Diameter,mm Φ65Φ70Φ72Φ75Φ80Φ85Φ90Φ92Φ95Φ100
Stock status
Diameter,mm Φ105Φ110Φ115Φ120Φ125Φ130Φ140Φ145Φ150Φ160
Stock status
Diameter,mm Φ170Φ180Φ190Φ200Φ210Φ220Φ230Φ240Φ250Φ260
Stock status

Remark:Diameter can be customized as per requests

4140-Manufactured By Reputable Steel Mills-Strategic Partners With Fuhong

YONGGANG GROUP LOGO
DONGBEI SPECIAL STEEL LOGO
SHISTEEL LOGO
  • 4140 Hot Forged Round Steel
Diameter,mmLength,mmTolerance,mmSurface ConditionHeat Treatment
Φ80-Φ1303000-10000-0/+3mm
BlackN/A
Φ135-Φ2503000-10000-0/+3mm
BlackN/A
Φ255-Φ5003000-7000-0/+5mm
BlackN/A
Φ505-Φ10001500-6000-0/+8mm
BlackN/A

Remark:

1.Forged round bar:Full size forging from diameter 80-1000mm

2.Length should be negotiatable

4140 steel pre-hardening process production line

Intermediate frequency quenching

Intermediate Frequency Quenching

Electric furnace heating

Electric Furnace Heating

shafts machining

Material Machining

Material Peeling

Material Peeling

Quality Inspection

Material Packing

Material Packing

Pre Hardened 4140 Bright bar

  • 4140 Full Inch Size Stock
Metric,mm Φ9.53Φ12.7Φ15.88Φ19.05Φ22.23Φ25.4
Imperial,Inch3/8"1/2"5/8"3/4"7/8"1"
Metric,mm Φ28.57Φ31.75Φ38.1Φ44.45Φ50.8Φ57.15
Imperial,Inch1 1/8"1 1/4"1 1/2"1 3/4"2"2 1/4"
Metric,mm Φ63.5Φ69.85Φ76.2Φ82.55Φ88.9Φ95.25
Imperial,Inch2 1/2"2 3/4"3"3 1/4"3 1/2"3 3/4"
Metric,mm Φ101.6Φ114.3Φ127Φ139.7Φ152.4Φ165.1
Imperial,Inch4"4 1/2"5"5 1/2"6"6 1/2"
Metric,mm Φ177.8Φ203.2Φ228.6Φ254Φ279.4Φ304.8
Imperial,Inch7"8"9"10"11"12"
  • 4140 Technical Specification Requirements
Straightness≤1 mm/m
Surface Roughness≤3.0 Ra/μm
Diameter ToleranceBest H11
Length Tolerance-0/+50mm
Hardness28-34 HRC

FUHONG STEEL-Sincerely looking forward to cooperating with you

  • 1500+tons daily stock for 4140 steel round bar
  • Hot rolled/PH(pre hardened) condition for 7 days deliver available
  • Hot Forged round steel for 30 days deliver available
  • Bright steel with QT condition for 10 days deliver available
  • Cold drawn steel for 20 days deliver available
  • Cut to length service available