Table of Content
- SAE 4340 Alloy Steel Round Bar Specification
- Equivalent Material of Alloy Steel 4340 Rod
- Grade 4340 Rounds Thermal Properties
- SAE 4340 Black Bar Tempering
- Most Common Types of SAE 4340 Round Bar
- Chemical Composition of 4340 Alloy Steel Hex Bar
- 4340 Steel Hexagon Rod Physical Properties
- Mechanical Properties of Alloy Steel 4340 Forged Bar
Manufacturer of ASTM 4340 Hex Bar, Refer Specification
4340 Flat Bar Supplier in Mumbai, View Equivalent for more information
| Standard | AISI / SAE 4340 |
|---|---|
| UNI | 35NiCrMo6 (KB), 40NiCrMo7 (KB) |
| EN # | 1.6582, 1.6562 |
| WERKSTOFF NR. | 34CrNiMo6, 40NiCrMo8-4 |
| BS 970 | 817M40, En24 |
| JIS | SNCM 447, SNB24-1-5 |
| EN name | 34CrNiMo6 |
| Thermal Conductivity | Thermal Expension |
|---|---|
| 44.5 W/mK | 12.3 um/m°C |
View Tempering of DIN 1.6563 Bright Bar in Mumbai
| Temperature | Hardness | |
|---|---|---|
| ° F | ° C | HRC |
| 1100 | 593 | 30 |
| 1200 | 649 | 25 |
| 500 | 260 | 49 |
| 800 | 427 | 41 |
| 400 | 204 | 52 |
| 900 | 482 | 38 |
| 600 | 316 | 47 |
| 700 | 371 | 45 |
| 1000 | 538 | 35 |
Alloy Steel 4340 Rod
4340 Alloy Steel Hex Bar
DIN 1.6563 Flat Bar
4340 Alloy Steel Square Bar
Grade 4340 Rounds
Alloy Steel 4340 Forged Bar
4340 Alloy Steel Bright Bar
SAE 4340 Black Bar
Understand the Chemical Testing of AISI 4340 Steel Square Bar
Carbon
0.38/0.43
Sulfur
0.025 max
Molybdenum
0.20/0.30
Manganese
0.65/0.85
Silicon
0.15/0.35
Nickel
1.65/2.00
Know More About Physical Properties of SAE 4340 Steel Rectangular Bar
Density
~7.85 g/cmÂł
Melting Point
~1425-1540 °C
Thermal Conductivity
~44.5 W/m·K
Electrical Resistivity
~0.0001 ohm·m
Modulus of Elasticity
~205 GPa
Elongation (%)
≧16
Yield Strength
≧90 kgf/mm²
Tensile strength
≧100 kgf/mm²
Hardness
293~352 HB
Impact Value
≧7
Cross Reduction Rate
≧45 %
| Export to | Price changes and the expected delivery |
|---|---|
| Austria | 5 % extra | 60 days |
| Switzerland | 5 % extra | 45 to 60 days |
| Slovakia | 5 % extra | 45 to 60 days |
| Finland | 5 % extra | 45 to 60 days |
| Ireland | 5 % ex |