Chrome Plated Hydraulic Piston Rods , Diameter 35mm - 140mm
Detailed Product Description
1. Material: CK45, ST52, 42CrMo4, 20MnV6, 40Cr, HY4520, HY4700
2. Piston rod manufacturer
3. Yield strength: Not less than 355 MPa
4. Tensile strength: Not less than 610 MPa
5. Widely used in mine machinery industry, textile and printing machinery industry and so on.
6. The critical processes of heat treatment and chrome plating are finished in our own company.
Detailed Description
1. CHEMICAL COMPOSITION(%)
| Material | C% | Mn% | Si% | S% | P% | V% | Ni | Cr% | Mo | Cu |
| ck45 | 0.42-0.50 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | | ≤0.25 | ≤0.25 | | ≤0.25 |
| ST52 | ≤0.22 | ≤1.6 | ≤0.55 | ≤0.04 | ≤0.04 | 0.02-0.15 | | | | |
| 20MnV6 | 0.17-0.24 | 1.30-1.70 | 0.10-0.50 | ≤0.035 | 0.035 | 0.10-0.20 | ≤0.30 | ≤0.30 | | ≤0.30 |
| 42CrMo | 0.38-0.45 | 0.5-0.8 | 0.17-0.37 | ≤0.035 | ≤0.035 | 0.07-0.12 | ≤0.03 | 0.90-1.20 | 0.15-0.25 | ≤0.03 |
| 40Cr | 0.37-0.45 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | | ≤0.3 | 0.80-1.1 | | ≤0.03 |
| HY4700 | 0.38-0.45 | 1.20 ~1.60 | 0.30~0.50 | ≤0.035 | ≤0.020 | 0.05～0.15 | ≤0.25 | 0.10～0.20 | ≤0.15 | 0.25 |
| HY4520 | 0.40 ~0.48 | 0.80 ~1.40 | 0.15 ~0.35 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.25 | ≤0.25 | ≤0.15 | ≤0.25 |
2. MECHANICAL PROPERTIES
| Material | T.S / Rm(MPa) | Y.S / Rel(MPa) | A% | CHARPY | CONDITION |
| ck45 | 610 | 355 | 16 | >41J | Normalized |
| ck45 | 800 | 540 | 20 | >41J | Q+T |
| ST52 | 500 | 355 | 22 | | Normalized |
| 20MnV6 | 750 | 590 | 12 | >40J | Normalized |
| 42CrMo4 | 980 | 850 | 14 | >47J | Q+T |
| 40Cr | 1000 | 800 | 10 | | Q+T |
3. MICRO ALLOY STEEL
| Material | MECHANICAL PROPERTIES | Surface hardness(HBW) |
| Rm(MPa) | Rel(MPa) | A% | Z% | KU2(J) | |
| HY4700 | Φ35 - Φ100 | 900 - 1100 | ≥650 | ≥16 | ≥35 | ≥39 | 270-340 |
| ＞Φ100 - Φ140 | 850 - 950 | ≥600 | ≥16 | ≥35 | ≥39 | 270-340 |
| HY4520 | Φ40 - Φ100 | 750 - 900 | ≥520 | ≥19 | ≥40 | ≥39 | 230-290 |
| ＞Φ100～Φ140 | 750 - 900 | ≥520 | ≥17 | ≥35 | ≥39 | 230-290 |
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4. SUPPLY CONDITION
Ground and chrome plated
5. CHROME THICKNESS
20 to 30 micron
6. TOLERANCES ON DIA
ISO f7 on the diameter
7.OVALITY
Half of the tolerance ISO f7
8. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron
9. STRAIGHTNESS
≤0.2MM/M
10 .SURFACE HARDNESS
850-1150HV (vickers 100g)
11. COHESION
No craks,breaking or detaching after thermic shock(warming up at 300 celsius degrees
and cooling in water)
12. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10
13 .POROSITY
Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10
14. WELDABILITY
Good
15. PACKING
Anti rust oil to be applied on material and each rod to be packed in paper sleeve
16. CERTIFICATE
All certificate related with material heat treatment and plating is required
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