Complaint
Structural Steel Round Bar Q+T Forged Cold Drawn 4140/1.7225/42CrMo4/SCM440/4340/1.6582/34CrNiMo6/8620/8640/20MnCr5 Alloy Steel for Shaft/Connecting Rod/Gear
Ningshing Precision Machinery began in 1992. We devote oneself to providing One-Stop Solutions to our customers on Tool Steel, Die Steel, Alloy Steel, Mold Base, Machining Parts, CNC Machine.
Dimensions
| Round | Flat | Block |
| Ø10-800 mm | 6-120 x 40-1200 mm | 80-700 x 100-1200 mm |
Delivery Condition
EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Hardness≤255HB, Black surface or Machined surface, UT SEP1921 Class3 D/d.
Chemical Compostion (%)
| Steel Grade | C | Si | Mn | P | S | Cr | Mo |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤ 0.035 | ≤ 0.040 | 0.80-1.10 | 0.15-0.25 |
| 1.7225 | 0.38-0.45 | ≤ 0.40 | 0.60-0.90 | ≤ 0.035 | ≤ 0.035 | 0.90-1.20 | 0.15-0.30 |
| 42CrMo4 | |||||||
| SCM440 | 0.38-0.43 | 0.15-0.35 | 0.60-0.85 | ≤ 0.035 | ≤ 0.040 | 0.90-1.20 | 0.15-0.30 |
| 4340 | 0.38-0.43 | 0.15-0.35 | 0.60-0.80 | ≤0.035 | ≤0.040 | 0.70-0.90 | 0.20-0.30 |
| 1.6582 | 0.30-0.38 | ≤0.40 | 0.50-0.80 | ≤0.035 | ≤0.035 | 1.30-1.70 | 0.15-0.30 |
| 34CrNiMo6 | |||||||
| 8620 | 0.18-0.23 | 0.15-0.35 | 0.70-0.90 | ≤0.035 | ≤0.040 | 0.40-0.60 | 0.15-0.25 |
| 8640 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.035 | ≤0.040 | 0.40-0.60 | 0.15-0.25 |
| 20MnCr5 | 0.17-0.22 | ≤0.40 | 1.10-1.40 | ≤0.035 | ≤0.035 | 1.00-1.30 | - |
Package
View more products, you can click product key words.
| Main Products | ||
| Steel Flat | Steel Plate | Die Steel |
| Plastic Mold Steel | Alloy Steel | Pre-machined Flat |
| Die Casting Die | Mold Base | Aluminum Die |
