한국 스틸 라운드 바 제조사
300M is a vacuum melted low alloy steel with the inclusion of vanadium and a higher silicon composition. It has a very good fatigue strength and resilience. Where fracture toughness and impact strength are crucial, 300M is a great choice.
| SKU | Description | Manufacture Method | Diameter | Shape | Specification |
|---|---|---|---|---|---|
| A1263 | 300M (4340M) AMS 6419 1.25 DIA | VACUUM ARC REMELT | 1.2500 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| 92248 | 300M (4340M) AMS 6419 1.00 DIA | VACUUM ARC REMELT | 1.0000 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| 92249 | 300M (4340M) AMS 6419 1.500 DIA | VACUUM ARC REMELT | 1.5000 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| #0c588f92434 | #0c588f300M (4340M) AMS 6419 4.00 DIA | VACUUM ARC REMELT | 4.0000 | ROD/BAR ROUND | #0c588fAMS 6257 AMS 6417 |
| 92472 | 300M (4340M) AMS 6419 5.00 DIA | VACUUM ARC REMELT | 5.0000 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| 92250 | 300M (4340M) AMS 6419 2.000 DIA | VACUUM ARC REMELT | 2.0000 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| A1266 | 300M (4340M) AMS 6419 2.250 DIA | VACUUM ARC REMELT | 2.2500 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| 92322 | 300M (4340M) AMS 6419 2.50 DIA | VACUUM ARC REMELT | 2.5000 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| 92333 | 300M (4340M) AMS 6419 3.00 DIA | VACUUM ARC REMELT | 3.0000 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| 92410 | 300M (4340M) AMS 6419 3.750 DIA | VACUUM ARC REMELT | 3.7500 | ROD/BAR ROUND | AMS 6257 AMS 6417 |
| Minimum Properties | Tensile Strength , psi | 280,000 |
| Yield Strength, psi | 230,000 | |
| Elongation | 7% | |
| Rockwell Hardness | B 311 Max | |
| Chemistry | Carbon( C) | .38 -.42% |
| Chrome (Cr) | 0.70-0.95% | |
| Manganese (Mn) | 0.60-.90% | |
| Molybdenum (Mo) | 0.30 - .50% | |
| Nickel ( Ni) | 1.65-2.0% | |
| Phosphorus (P) | P & S - 0.10 % | |
| Sulphur (S) | P & S - 0.10 % | |
| Silicon (Si) | 1.45 - 1.80% | |
| Vanadium( V) | 0.05 - 0.10 % | |
| Copper ( Cu) | 0.35% |