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.
Raw Material-4140 Round Steel Full Size Stock
- 4140 Hot Rolled Round Steel
| Diameter,mm | Length,mm | Tolerance,mm | Surface Condition | Heat Treatment |
| Φ14-Φ100 | Fixed,5800 or 6000 |
-0/+0.5mm |
Black | N/A |
| Φ105-Φ190 | Fixed,5800 or 6000 |
-0/+1mm |
Black | N/A |
| Φ200-Φ250 | Fixed,5800 or 6000 or 8000 |
-0/+1mm |
Black | N/A |
| Φ260-Φ350 | Fixed,5800 or 6000 |
-0/+2mm |
Black | N/A |
Remark:Length can be customized as per requests
4140 Hot-rolled Round Steel-Available Stock Size
| Diameter,mm | Φ14 | Φ16 | Φ18 | Φ19 | Φ20 | Φ21 | Φ25 | Φ27 | Φ28 | Φ30 |
| Stock status | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
| Diameter,mm | Φ32 | Φ33 | Φ35 | Φ40 | Φ45 | Φ46 | Φ50 | Φ52 | Φ55 | Φ60 |
| Stock status | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
| Diameter,mm | Φ65 | Φ70 | Φ72 | Φ75 | Φ80 | Φ85 | Φ90 | Φ92 | Φ95 | Φ100 |
| Stock status | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
| Diameter,mm | Φ105 | Φ110 | Φ115 | Φ120 | Φ125 | Φ130 | Φ140 | Φ145 | Φ150 | Φ160 |
| Stock status | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
| Diameter,mm | Φ170 | Φ180 | Φ190 | Φ200 | Φ210 | Φ220 | Φ230 | Φ240 | Φ250 | Φ260 |
| Stock status | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ |
Remark:Diameter can be customized as per requests
4140-Manufactured By Reputable Steel Mills-Strategic Partners With Fuhong
- 4140 Hot Forged Round Steel
| Diameter,mm | Length,mm | Tolerance,mm | Surface Condition | Heat Treatment |
| Φ80-Φ130 | 3000-10000 |
-0/+3mm |
Black | N/A |
| Φ135-Φ250 | 3000-10000 |
-0/+3mm |
Black | N/A |
| Φ255-Φ500 | 3000-7000 |
-0/+5mm |
Black | N/A |
| Φ505-Φ1000 | 1500-6000 |
-0/+8mm |
Black | N/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
Electric Furnace Heating
Material Machining
Material Peeling
Quality Inspection
Material Packing
Pre Hardened 4140 Bright bar
- 4140 Full Inch Size Stock
| Metric,mm | Φ9.53 | Φ12.7 | Φ15.88 | Φ19.05 | Φ22.23 | Φ25.4 |
| Imperial,Inch | 3/8" | 1/2" | 5/8" | 3/4" | 7/8" | 1" |
| Metric,mm | Φ28.57 | Φ31.75 | Φ38.1 | Φ44.45 | Φ50.8 | Φ57.15 |
| Imperial,Inch | 1 1/8" | 1 1/4" | 1 1/2" | 1 3/4" | 2" | 2 1/4" |
| Metric,mm | Φ63.5 | Φ69.85 | Φ76.2 | Φ82.55 | Φ88.9 | Φ95.25 |
| Imperial,Inch | 2 1/2" | 2 3/4" | 3" | 3 1/4" | 3 1/2" | 3 3/4" |
| Metric,mm | Φ101.6 | Φ114.3 | Φ127 | Φ139.7 | Φ152.4 | Φ165.1 |
| Imperial,Inch | 4" | 4 1/2" | 5" | 5 1/2" | 6" | 6 1/2" |
| Metric,mm | Φ177.8 | Φ203.2 | Φ228.6 | Φ254 | Φ279.4 | Φ304.8 |
| Imperial,Inch | 7" | 8" | 9" | 10" | 11" | 12" |
- 4140 Technical Specification Requirements
| Straightness | ≤1 mm/m |
| Surface Roughness | ≤3.0 Ra/μm |
| Diameter Tolerance | Best H11 |
| Length Tolerance | -0/+50mm |
| Hardness | 28-34 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