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| Categories | Chrome Plated Steel Bar |
|---|---|
| Brand Name: | DALLAST APT |
| Model Number: | Model |
| Certification: | TUV SGS |
| Place of Origin: | CHINA |
| MOQ: | 10 |
| Payment Terms: | T/T |
| Supply Ability: | 1000000pcs/year |
| Delivery Time: | 15-25 days |
| Packaging Details: | wood box |
| Material: | 45# 42CrMo4 40CrMo |
| Neutral Salt Spray test: | NSS 300;500 hours |
| Type: | Hollow/Solid Rod |
| Surface hardness: | ＞HV850 |
| NSS Testing Standing: | une-en iso9227:2017 |
| SURFACE ROUGHNESS: | Ra≤0.2 micron and Rt≤2 micro |
| Application Environment: | At sea or in harsh environments |
| Color: | Black |
42CrMo Hydraulic Cylinder Hollow Piston Rod Hard Chrome Plated Steel Bar Neutral Salt Spray test 500 hours
CHEMICAL COMPOSITION
| Material | C% | Mn% | Si% | S% | P% | V% | Cr% |
| Ck45 | 0.42-0.50 | 0.50-0.80 | 0.04 | 0.035 | 0.035 | ||
| ST52 | 0.22 | 1.6 | 0.55 | 0.035 | 0.04 | ||
| 20MnV6 | 0.16-0.22 | 1.30-1.70 | 0.10-0.50 | 0.035 | 0.035 | 0.10-0.20 | |
| 42CrMo4 | 0.38-0.45 | 0.60-0.90 | 0.15-0.40 | 0.03 | 0.03 | 0.90-1.20 | |
| 40Cr | 0.37-0.45 | 0.50-0.80 | 0.17-0.37 | 0.80-1.10 |
NSS( Salt Spray test )Testing Standing une-en iso9227:2017
· Sal solution: 50 (+/- 5) g/l of NaCl. Water is demineralized and salt purity is 99.5%.
· Environmental temperature: 35 °C.
· pH of salt solution is 6.8.
· Volumen of salt solution is 38.4 ml/day.
· Density of salt solution is 1,030 g/cm3.
· Spraying is 1.5 (+/- 0.5) ml/h.
Test Result :NSS can endure 300 hours ;500 hours; 800 hours
TUV NSS Testing Report SGS NSS Testing Report
Applications:
Single-acting/double-acting hydraulic cylinders --- Garbage trucks, dump trucks, agricultural equipment, ships, mines, drilling platforms, machinery in harsh environments
Detail
| Color | Black |
| Type | Hollow/Solid Rod |
| Application Environment | At sea or in harsh environments |
| Surface hardness | ＞HV860 |
| SURFACE ROUGHNESS | Ra≤0.2 micron and Rt≤2 micro |
| OLERANCES ON DIA | ISO f10 on the diameter |
| LENGTH | MAX 5 meter |
MECHANCIAL PROPERTIES
| Material | T.S N/MM2 | Y.S N/MM2 | E%(MIN) | CHARPY | CONDITION |
| CK45 | 610 | 355 | 15 | >41J | NORMALIZE |
| CK45 | 800 | 630 | 20 | >41J | Q + T |
| ST52 | 500 | 355 | 22 | NORMALIZE | |
| 20MnV6 | 750 | 590 | 12 | >40J | NORMALIZE |
| 42CrMo4 | 980 | 850 | 14 | >47J | Q + T |
| 40Cr | 1000 | 800 | 10 | Q + T |
Crafts Process Hardening Force Remove
In the whole crafts process, there are 2 times remove hardening forces: the first remove hardening force in the heat treatment process, hardening force remove is about 80%; the second remove hardening force in the surface treatment process, hardening force remove is about 90%-95%. Therefore, the piston rod is not easily deformed during use or transportation.
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