Micro Alloy Steel Chrome Piston Rod Chrome Plating With High Strength

Micro Alloy Steel Chrome Piston Rod Chrome Plating With High Strength Detailed Product Description 1. Material: CK45, ST52, 20MnV6, 42CrMo4, 40Cr, HY4520, HY4700 2. ISO9001:2008 3. Yield strength: Not less than 355 MPa 4. Tensile strength: Not less than 610 MPa 5. Completed manufactured equipments, Advanced inspection apparatus 6. Application: Mining machinery industry, textile / printing industry and 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 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 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. COHESION       No craks,breaking or detaching after thermic shock(warming up at 300 celsius degrees     and cooling in water) 12. CORROSION RESISTANCE      Test in natural salt spray according to ASTM B 117-120hours      Results evaluation according to ISO 4540 RATING 7-10 13 .POROSITY       Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10 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  Meeting clients' requirements is our forever goal. Benefit mutually and go forward hand in hand.