Hard Chrome Plated Rod/Bar/Shaft
Hard Chrome Plated Rod/Bar/Shaft
Product Description
The hard chrome plated rod boasts an exceptional surface roughness and optimal corrosion resistance. Chrome plating is employed to enhance surface longevity, combating significant surface friction, corrosion, contamination, and potential external harmful factors that could lead to damage.
As one of the hard chrome plated rod suppliers, Chenyu produced hard chrome plated bars range in diameter from 6mm to 300mm, with a daily production capacity of 30 tons. Following the NSS salt spray test, a thorough inspection is conducted to ensure the hard chrome plated shafts meet the required standards.
This hard chrome plated steel bars are mainly used for hydraulic pneumatic, engineering machinery, automotive manufacturing piston rods, plastic machinery guide pillars, packaging machinery, printing machinery roller shafts, textile machinery, conveyor machinery axis, and linear optical axis for linear motion.
Technical Parameter
SUPPLY CONDITION: Ordinary or chromium or nickel plating
CHROME: 20 to 30 micron
SURFACE ROUGHNESS: Ra≤0.2micron
Chemical composition:
|
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 |
0.50-0.80 |
0.17-0.37 |
≤0.035 |
≤0.035 |
0.07-0.12 |
≤0.30 |
0.90-1.20 |
0.15-0.25 |
≤0.003 |
|
40Cr |
0.37-0.45 |
0.50-0.80 |
0.17-0.37 |
≤0.035 |
≤0.035 |
|
≤0.30 |
≤0.30 |
|
≤0.003 |
|
38MnVS6 |
0.34-0.41 |
1.20-1.60 |
0.15-0.80 |
0.02-0.06 |
≤0.025 |
0.08-0.20 |
|
≤0.30 |
≤0.08 |
|
Mechanical properties:
|
Mechanical properties |
||||
|
Material |
Tensile strength |
Yield point |
Elongation |
Impact energy |
|
CK45(Normalized) |
610 |
355 |
15 |
＞41J |
|
CK45(Q+T) |
800 |
540 |
20 |
＞41J |
|
ST52 |
500 |
355 |
22 |
|
|
20MnV6 |
750 |
590 |
12 |
＞40J |
|
42CrMo |
980 |
850 |
14 |
＞47J |
|
40Cr |
1000 |
800 |
10 |
|
|
38MnVS6 |
700-950 |
≥520 |
12 |
|
Tolerance:
|
Tolerance |
||||||||||
|
Dia(mm) |
6~10 |
10~18 |
18~30 |
30~50 |
50~80 |
80~120 |
120~180 |
180~250 |
250~315 |
|
|
Deviation |
f7 |
-13 |
-16 |
-20 |
-25 |
-30 |
-36 |
-43 |
-50 |
-56 |
|
f8 |
-13 |
-16 |
-20 |
-25 |
-30 |
-36 |
-43 |
-50 |
-56 |
|
TOLERANCES ON DIA: ISO f7/f8 on the diameter
OVALITY: Half of the tolerance
STRAIGHTNESS: φ<20mm MAX0.15:1000mm
φ>20mm MAX0.1:1000mm
SURFACE HARDNESS: Min 900HV;Induction hardness HRC52-58
COHESION: No carks, breaking or detaching after thermic shock(warming up at300 ℃ degrees and cooling in water)
POROSITY: Test according to ISO 1456/1458 and result valuation according to ISO4540 rating 8-10
CORROSION RESISTANCE: Testing in natural salt spray according to ASTM B 117-120hours
PACKING: Anti rust oil to be applied on material and each hard chrome hydraulic rod to be packed in paper sleeve. Bubble film winding, wooden case
CERTIFICATE: Inspection report, raw material certificateheat treatment and chrome plating certificate
