Model NO.: 4130, 4140
Transport Package: Export Standard Seaworthy Packing
Origin: China
Model NO.: 4130, 4140
Transport Package: Export Standard Seaworthy Packing
Origin: China
ASTM 4130/4140 Â Alloy Seamless Steel Pipe is medium carbon alloy grades, which are widely used for many general purpose applications that require high tensile strength and toughness. The addition of chromium and molybdenum as alloying elements, combined with heat treatment, provides the combined advantage of hardness, ductility, and strength.Delivery status of Steel Tube & Pipe:
NBK(+N) BK(+C) Â BKW+(LC) BKS(SR)
Package of ASTM A519 Alloy Steel Tube & Pipe:
1. Bundle Packing.
2. Plain end or vanished as per customer's request.
3. Wrapped in waterproof paper.
4. Sackcloth with several steel strips.
5. Pack in heavy tri-wall boxes.
Grade and Chemical Composition of ASTM A519 Alloy Steel Pipe  (%)
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo |
| 1008 | ≤0.10 | 0.30-0.50 | 0.04 | 0.05 | - | - | - |
| 1010 | 0.08-0.13 | 0.30-0.60 | 0.04 | 0.05 | - | - | - |
| 1018 | 0.15-0.20 | 0.60-0.90 | 0.04 | 0.05 | - | - | - |
| 1020 | 0.18-0.23 | 0.30-0.60 | 0.04 | 0.05 | - | - | - |
| 1025 | 0.22-0.28 | 0.30-0.60 | 0.04 | 0.05 | - | - | - |
| 1026 | 0.22-0.28 | 0.60-0.90 | 0.04 | 0.05 | - | - | - |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.04 | 0.05 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.75-1.00 | 0.04 | 0.05 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
Mechanical Properties
| Grade | Condition | Tensile Point  (MPa) | Yield Point  (MPa) | Elongation |
| 1020 | CW | ≥414 | ≥483 | ≥5% |
| SR | ≥345 | ≥448 | ≥10% | |
| A | ≥193 | ≥331 | ≥30% | |
| N | ≥234 | ≥379 | ≥22% | |
| 1025 | CW | ≥448 | ≥517 | ≥5% |
| SR | ≥379 | ≥483 | ≥8% | |
| A | ≥207 | ≥365 | ≥25% | |
| N | ≥248 | ≥379 | ≥22% | |
| 4130 | SR | ≥586 | ≥724 | ≥10% |
| A | ≥379 | ≥517 | ≥30% | |
| N | ≥414 | ≥621 | ≥20% | |
| 4140 | SR | ≥689 | ≥855 | ≥10% |
| A | ≥414 | ≥552 | ≥25% | |
| N | ≥621 | ≥855 | ≥20% |
 ASTM 4130/4140  Alloy Seamless Steel Pipe is medium carbon alloy grades, which are widely used for many general purpose applications that require high tensile strength and toughness. The addition of chromium and molybdenum as alloying elements, combined with heat treatment, provides the combined advantage of hardness, ductility, and strength.
Delivery status of Steel Tube & Pipe:
NBK(+N) BK(+C) Â BKW+(LC) BKS(SR)
Package of ASTM A519 Alloy Steel Tube & Pipe:
1. Bundle Packing.
2. Plain end or vanished as per customer's request.
3. Wrapped in waterproof paper.
4. Sackcloth with several steel strips.
5. Pack in heavy tri-wall boxes.
Grade and Chemical Composition of ASTM A519 Alloy Steel Pipe  (%)
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo |
| 1008 | ≤0.10 | 0.30-0.50 | 0.04 | 0.05 | - | - | - |
| 1010 | 0.08-0.13 | 0.30-0.60 | 0.04 | 0.05 | - | - | - |
| 1018 | 0.15-0.20 | 0.60-0.90 | 0.04 | 0.05 | - | - | - |
| 1020 | 0.18-0.23 | 0.30-0.60 | 0.04 | 0.05 | - | - | - |
| 1025 | 0.22-0.28 | 0.30-0.60 | 0.04 | 0.05 | - | - | - |
| 1026 | 0.22-0.28 | 0.60-0.90 | 0.04 | 0.05 | - | - | - |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.04 | 0.05 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.75-1.00 | 0.04 | 0.05 | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
Mechanical Properties
| Grade | Condition | Tensile Point  (MPa) | Yield Point  (MPa) | Elongation |
| 1020 | CW | ≥414 | ≥483 | ≥5% |
| SR | ≥345 | ≥448 | ≥10% | |
| A | ≥193 | ≥331 | ≥30% | |
| N | ≥234 | ≥379 | ≥22% | |
| 1025 | CW | ≥448 | ≥517 | ≥5% |
| SR | ≥379 | ≥483 | ≥8% | |
| A | ≥207 | ≥365 | ≥25% | |
| N | ≥248 | ≥379 | ≥22% | |
| 4130 | SR | ≥586 | ≥724 | ≥10% |
| A | ≥379 | ≥517 | ≥30% | |
| N | ≥414 | ≥621 | ≥20% | |
| 4140 | SR | ≥689 | ≥855 | ≥10% |
| A | ≥414 | ≥552 | ≥25% | |
| N | ≥621 | ≥855 | ≥20% |
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