| Brand Name: | HY | 
| MOQ: | 5 tons | 
| Price: | Negotiation | 
| Delivery Time: | 30days | 
Custom Hollow Shock Absorber Boom Hydraulic Cylinder Pistons Rods  
 
| 
			 Name 
			 | 
			
			 Piston Rod 
			 | 
		
| 
			 Diameters 
			 | 
			
			 6-300mm 
			 | 
		
| 
			 Length 
			 | 
			
			 100mm-1200mm 
			 | 
		
| 
			 Steel grade 
			 | 
			
			 DIN CK45 JIS 45C ASTM 1045 SAE 1045 AISI 1045 
			 | 
		
| 
			 Tolerance 
			 | 
			
			 ISO f7 
			 | 
		
| 
			 Chrome thickness 
			 | 
			
			 20μm(min) 
			 | 
		
| 
			 Hardness of the chrome layer 
			 | 
			
			 850HV(min) 
			 | 
		
| 
			 Roughness 
			 | 
			
			 Ra 0.2μm(max) 
			 | 
		
| 
			 Straightness 
			 | 
			
			 0.2/1000mm 
			 | 
		
| 
			 Mechanical Properties(ck45) 
			 | 
			
			 Yield strength≥20Mpa
			 
			Tensile strengh≥80 Mpa 
			Elongation≥5% 
			 | 
		
| 
			 Supply condition 
			 | 
			
			 1. Hard chrome plated 
			 | 
		
| 
			 2. Induction hardened 
			 | 
		|
| 
			 3. Quenched & Tempered 
			 | 
		|
| 
			 4. Induction hardened with Q&T 
			 | 
		
 
Detailed Description
1.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  | 
		
 
2.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  | 
		
 
3. SUPPLY CONDITION
    Ground  and  chrome plated 
4. CHROME THICKNESS
     20 to 30 micron
5. SURFACE ROUGHNESS
     Ra≤0.2 micron and  Rt≤2 micro
6. TOLERANCES ON DIA
    ISO f7 on the diameter
7.OVALITY
Half of the tolerance ISO f7
8. STRAIGHTNESS
   ≤0.2MM/M
9. SURFACE HARDNESS
   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
 
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