Table of Content
Check Specification of 42CrMo4 Steel Hex Bar as per EN 10221/ EN 10277
SAE 4140 Round Bar Size
SAE 4140 Steel Rod length
AISI 4140 Round Bar Hardness
4140 Chrome Moly Steel Flat Bar Melting point
AISI 4140 Steel Forging temperature
SCM440 Hex Bar Mechanical properties
WNR 1.7225 Square Bar Packing
SAE 4140 Bright Bar Certifications
SCM440 Forged Bar Surface treatment
AISI 4140 Hex Rod Manufacturing process
AISI 4140 Steel Heat Treatment
Chrome Moly 4140 Hexagon Rod Testing methods
WNR 1.7225 Rectangular Bar Application
42CrMo4 Annealed Round Bar Features
4140 Steel Uses
View AISI 4140 Temper Chart
| Value | Temperature | Condition |
|---|---|---|
| J/Kg·K | °C | Hardened & Tempered |
| 473 | 20-200 | |
| 519 | 20-400 | |
| 561 | 20-6 |
Supplier of SCM440 Rectangular Bar and 4140 steel weldability, View 4140 Steel Equivalent Material
| Russia | GOST | 35KHM / 38KHM |
|---|---|---|
| France | AFNOR | 42CD4 |
| England | BS | 708M40 / CFS11 |
| Italy | UNI | 42CrMo4 |
| USA | – | 4140 / 4142 |
| EU | EN | 42CrMo4 |
| Sweden | SS | 2244 |
| Finland | SFS | 42CrMo4 |
| Spain | UNE | 40CrMo4 / F1252 |
| China | GB | 42CrMo |
| Germany | DIN,WNr | 42CrMo4 |
| Japan | JIS | SCM440H |
| Inter | ISO | 42CrMo4 |
View AISI 4140 Rod Thermal Properties and 4140 Steel Machinability for Better Information
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion coefficient | µm/m°C | µin/in°F |
| 12.2 | 6.78 | |
| Thermal conductivity | W/mK | BTU in/hr.ft².°F |
| 42.6 | 296 |
ASTM A29 Flat Bar Supplier in Mumbai, With Different Shapes
SAE 4140 Rod
AISI 4140 Bright Bar
ASTM A29 Hex Bar
ASME SA29 Flat Bar
4140 Square Bar
SCM440 Forged Bar
Find 4140 Chemical Composition and 4140 Corrosion Resistance of SCM440 Annealed Round Bar
Carbon
0.43
Silicon
0.35
Mangenese
1.00
Phosphorus
0.035
Sulfur
0.040
Molybdenum
0.25
Density
7.85 g/cm³
Melting Point
~1420-1540 °C
Thermal Conductivity
~45 W/m·K
Thermal Expansion
~11.7 µm/m·K
Electrical Resistivity
~0.0005 Ω·m
Know More About WNR 1.7225 Hot Rolled Bar Impact Resistance and 4140 Steel Density, Refer Mechanical properties
Elongation (%)
20 Min
Yield Strength
621 ksi Min
Tensile strength
855 Ksi Min
what is 4140 Steel used for?
- Automotive Components
- Machinery Parts
- Aerospace Applications
- Oil and Gas Industry
- Construction Equipment
- Railroad Equipment
- Military Applications
4140 vs 4130 Steel Round Bar
| Properties | SAE 4140 Round Bar | SAE 4130 Round Bar |
|---|---|---|
| Carbon Content | 0.38-0.43% | 0.28-0.33% |
| Chromium Content | 0.80-1.10% | 0.80-1.10% |
| Molybdenum Content | 0.15-0.25% | 0.15-0.25% |
| Tensile Strength | 655-900 MPa | 580-850 MPa |
| Yield Strength | 415-655 MPa | 350-700 MPa |
| Hardness (HB) | 197-250 (as-rolled) | 197-235 (as-rolled) |
| Applications |
|
|
What are the typical surface conditions available?
| Surface Condition | |
|---|---|
| Hot Rolled | Galvanized |
| Cold Drawn | Machined |
| Pickled | Black Oxide |
| Polished | Anodized |
What is AISI 4140 Steel Grade Designation?
| Designation | Meaning |
|---|---|
| AISI | American Iron and Steel Institute |
| 4 | Indicates a low-alloy steel (4XXX series) |
| 1 | Refers to chromium-molybdenum as the main alloying element |
| 40 | 0.40% carbon content |
What Are Equivalent Grades for AISI 4140 Steel？
| Standard | Grade |
|---|---|
| BS 970 | EN19 |
| JIS G4105 | SCM440 |
| EN10083 | 42CrMo4 |
| 1.7225 | |
| ASTM A29 | 4140 |
| GB 3077 | 42CrMo |
Can We Use AISI 4140 Steel Instead of 42crmo4 Steel?
Yes, we Can use AISI 4140 Steel Instead of 42crmo4 Steel
| Properties | AISI 4140 | 42CrMo4 |
|---|---|---|
| Carbon Content | 0.38-0.43% | 0.40-0.45% |
| Chromium Content | 0.9-1.2% | 0.90-1.20% |
| Molybdenum Content | 0.15-0.25% | 0.15-0.25% |
| Tensile Strength | 655-850 MPa (95-123 ksi) | 700-900 MPa (102-130 ksi) |
| Yield Strength | 415-690 MPa (60-100 ksi) | 600-800 MPa (87-116 ksi) |
| Hardness (HB) | 207-255 HBW | 217-255 HBW |
| Impact Toughness | 35-60 J | 40-50 J |
| Applications | Automotive, machinery, tooling | Automotive, machinery, oil & gas |
What is the Difference Between AISI 4140 Steel and AISI 4130 Steel?
| Property | AISI 4130 | AISI 4140 |
|---|---|---|
| Carbon Content | 0.28-0.33% | 0.38-0.43% |
| Chromium Content | 0.8-1.1% | 0.9-1.2% |
| Molybdenum Content | 0.15-0.25% | 0.15-0.25% |
| Tensile Strength | 570-700 MPa | 655-850 MPa |
| Yield Strength | 415-525 MPa | 415-690 MPa |
| Hardness (HB) | 197-237 HBW | 207-255 HBW |
| Applications | Aerospace, automotive, oil & gas | Heavy machinery, automotive, tooling |
| Heat Treatment | Quenching and tempering | Quenching and tempering |
Is AISI 4140 Steel Heat Treatable?
| Heat Treatment Process | Temperature Range | Medium |
|---|---|---|
| Annealing | 870-900°C (1600-1650°F) | Slow cooling in furnace or air |
| Quenching | 840-870°C (1550-1600°F) | Oil or water |
| Tempering | 400-700°C (750-1300°F) | Air cooling |
Which Condition Should Be Normalized for AISI 4140 Steel?
| Condition | Normalizing Process |
|---|---|
| As-Forged Condition |
|
| Welded Condition | |
| Heavily Machined Parts | |
| High-Stress Applications |
What is Differences Between Normalizing and Annealing for AISI 4140 Steel?
| Properties | Normalizing | Annealing |
|---|---|---|
| Purpose | Refine grain, improve toughness | Soften steel, enhance machinability |
| Temperature Range | 870-900°C (1600-1650°F) | 800-850°C (1470-1560°F) |
| Cooling Method | Air-cool | Furnace-cool |
| Hardness Range | 200-250 HBW | 150-200 HBW |
| Ideal Applications | High-stress and welded parts | Parts needing extensive machining |
AISI 4140 Steel vs AISI 4145 Steel
| Properties | AISI 4140 Steel | AISI 4145 Steel |
|---|---|---|
| Carbon Content | 0.38-0.43% | 0.43-0.48% |
| Tensile Strength | 655-862 MPa | 700-900 MPa |
| Yield Strength | 415 MPa | 450 MPa |
| Hardness (HRC) | 28-32 HRC | 30-35 HRC |
| Toughness (Impact Energy) | 45-55 J | 50-60 J |
What Are Advantages for AISI 4140 Cold Drawn Steel？
- Increased Strength
- Improved Surface Finish
- Enhanced Dimensional Accuracy
- Better Machinability
- Higher Fatigue Resistance
- Consistent Mechanical Properties
What is the hardness of 4140 steel?
| Condition | 4140 Hardness Rockwell C |
|---|---|
| As-Rolled Condition | 207-248 HB |
| After Quenching and Tempering | 28-32 HRC |
| After Cold Drawing | 30-35 HRC |
Sizes of AISI 4140 Round Bar
| Hot Forged | |||
|---|---|---|---|
| Size,mm | Length,m | Tolerance,mm | |
| Black | Bright | ||
| Φ80-Φ1200mm | 3-10m | 0/+5mm | 0/+3mm |
| Cold Drawn | |||
| Size,mm | Length,m | Tolerance,mm | |
| Φ4-Φ100mm | 3-8m | h11 | |
| Hot Rolled | |||
| Size,mm | Length,m | Tolerance,mm | |
| Black | Bright | ||
| Φ14-Φ300mm | 5.8m/6m/8.1m | 0/+1mm | H11 |
Location and Delivery Time of SCM440 Forged Bar
| Export to | 4140 Steel Price changes and the expected delivery |
|---|---|
| South Korea | 5 % extra | 7 days |
| Japan | 5 % extra | 7 days |
| Sri Lanka | 5 % extra | 5 days |
| Mayanmar | 5 % extra | 25 days |
| Taiwan | 5 % extra | 15 days |
3 Likes