We are professional Hydraulic cylinder barrel factory from China
Hydraulic cylinder barrel is a the key part of a piece of hydraulic cylinder.
1. Commodity: Hydraulic cylinder barrel
2. Size range: Bore of barrel: 450mm max, Length of barrel: 3000mm max.
3. Material of cylinder barrel: Carbon steel and alloy steel like DIN2391-2 ST52, EN10305-1 E355, C45E, 25CrMo4, 42CrMo4, ASTM A519 SAE1020, SAE1026, SAE1045, SAE4130, SAE4140, etc.
4. Flanges and feedline pipes can be welded to the cylinder barrel.
5. Application: Hydraulic cylinders for excavators, forklifts, earthmovers, etc
6. Cylinder head: According to customer's design or drawing.
| Material | Chemical composition |
| | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Mo (%) |
| SAE1020/AISI1020 | 0.17-0.24 | 0.17-0.37 | 0.4-0.7 | 0.030 max | 0.025 max | - | - |
| SAE1026/25Mn | 0.22-0.28 | 0.15-0.35 | 0.6-0.9 | 0.030 max | 0.030 max | - | - |
| SA1045/S45C,CK45,C45E | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | 0.030 max | 0.025 max | - | - |
| ST52/ST52.3/ST52.4/E355 | 0.22 max | 0.55 max | 1.60 max | 0.025 max | 0.025 max | - | - |
| 27SiMn (Chinese steel grade) | 0.24-0.32 | 1.1-1.4 | 1.1-1.4 | 0.035 max | 0.035 max | - | - |
| SAE4130/34CrMo4 | 0.28-0.33 | 0.15-0.35 | 0.4-0.6 | 0.035 max | 0.035 max | 0.9-1.2 | 0.15-0.30 |
| SAE4140/42CrMo4 | 0.38-0.45 | 0.4 max | 0.6-0.9 | 0.035 max | 0.035 max | 0.9-1.2 | 0.15-0.30 |
Mechanical properties of cylinder barrel:
| Material | Requirement of mechanical properties |
| BK | BKW | BKS | Normalized |
| A106 B/SAE1020 | 580 Min | 5 Min | 520 Min | 8 Min | As per requirement | As per requirement |
| SA1045/S45C,CK45 | 645 Min | 4 Min | 630 Min | 5 Min | As per requirement | As per requirement |
| ST52/ST52.3/E355 | 640 Min | 4 Min | 580 Min | 7 Min | 580 Min | 420 Min | 10 Min | As per requirement |
| SAE4130/34CrMo4 | - | - | - | - | 720 Min | 580 Min | 10 Min | As per requirement |
| SAE4140/42CrMo4 | - | - | - | - | 855 Min | 689 Min | 10 Min | As per requirement |