SAE4140 Hard chrome plated steel bars

SAE4140 Hard chrome plated steel bars

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Shandong Jianning Metals Co., Ltd
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Description

SAE4140 hard chrome plated hydraulic cylinder piston rod
1.Chemical Composition

Material C% Mn% Si% S% P% Cr%
Ck45 0.42-0.50 0.50-0.80 0.17-0.37 0.035 0.035 0.25
2.Mechancial Properties

Material T.S N/MM2 Y.S N/MM2 E%(MIN) CONDITION
CK45 610 355 15 NORMALIZE
CK45 800 630 20 Q + T

3. Supply Condition
Ground and chrome plated
4. Chrome Thickness
20 to 30 micron
5. Surface Roughness
Ra 0.2 micron (max)
6. Tolerance on DIA
ISO f7 on the diameter
7.Ovality
Half of the tolerance ISO f7
8. Straightness
0.2/1000mm
9. Hardness of the chrome layer
850-1150HV (vickers 100g)
10. Cohesion
No cracks,breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling in water)
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 117-72hours
Results evaluation according to ISO 4540 RATING 7-10
13. Weldability
Good
14. Packing
Anti rust oil to be applied on material and each rod to be packed in paper sleeve
15. Certificate
All certificate related with material heat treatment and plating is required

Additional info

Supply type: Manufacturer
Ad ID: 568306
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Contact supplier

People:
Beck Hou
Address:
Shandong Jianning Metals Co., Ltd
159th East Dongchang Road
Liaocheng, Shandong, 252000
China
Phone:
+86-635-8571299