20-30 Micron ISO F7 Hydraulic Piston Rods For Hydraulic Cylinder
Detailed Product Description
1. Material: CK45, ST52, 20MnV6, 40Cr, 42CrMo4, HY4700, HY4520
2. Ground and chrome plated
3. Yield strength: Not less than 355 MPa
4. Tensile strength: Not less than 610 MPa
5. Our inspection equipment: Ultrasonic flaw detector, Surface
roughness tester, Salt spray test machine, spectrometer, Chrome
thickness test equipment, Shock test machine, Rockwell hardness
tester, Microscopic hardness meter, Tensile testing machine ans so
on.
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 |
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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. SURFACE ROUGHNESS
Ra≤0.2 micron and Rt≤2 micron
7. TOLERANCES ON DIA
ISO f7 on the diameter
8.OVALITY
Half of the tolerance ISO f7
9. STRAIGHTNESS
≤0.2MM/M
10 .SURFACE HARDNESS
850-1150HV (vickers 100g)
11 .POROSITY
Test according to ISO 1456/1458 and result yaluation according to
ISO 4540 rating 8-10
12. CORROSION RESISTANCE
Test in natural salt spray according to ASTM B 117-120hours
Results evaluation according to ISO 4540 RATING 7-10
13. COHESION
No craks,breaking or detaching after thermic shock(warming up at
300 celsius degrees
and cooling in water)
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
