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Chrome Bars for cylinders

chrome bars for cylinders
1.0 - STEELS AND THEIR FEATURES:
1.1 - QUALITY ':
CK45 C53 20MnV6 42CrMo4
norm. norm. norm. quenched
1.2 - FEATURE. CHEMICAL:
C 0,40-0.46 0,16-0,22 0,50-0,57 0,38-0,45%
% Mn 0,50-0,80 1,40-1,75 0,50-0,80 0,60-0,90
It 0,15-0,40 0,15-0,35 0,15-0,40 0,15-0,40%
% Cr - - - 0.90 to 1.20
% Mo - - - 0.15 to 0.25
V% - 0.10 to 0.20 - -
S 0.030% max 0.035 0.030 0.030
P 0.030% max 0.035 0.030 0.030

1.3 - FEATURE. MECHANICAL
Yield
Rp 0.2 N / mm ²> 320> 450> 330> 730
resistance
Rm N / mm ² 520-700 540-710 650-800 880-1150
elongation
Ad5%> 15> 16> 15> 12
resilience

KCU 20 ° C -> J 40 -> 25 J
KV - 20 ° C. -> 27 J> 27 J
Weldability GOOD GOOD GOOD MODERATE

- CHARACTERISTICS OF THE REPORTING OF CHROME:
2.1 - THICKNESS:
My 15 + / - 3 to my diameter. 20 mm.
My 25 + / - 5 over my diam. 20 mm.
2.2 - SURFACE HARDNESS:
HV/100 850-1150 gr.
2.3 - ROUGHNESS ':
My 0.2 Ra max - max 2 my Rt
2.4 - GRIP:
no detachment or cracking after thermal shock (heating at 300 degrees for 1 hourand cooling in water)
2.5 - POROSITY ':
testing and evaluation according to ISO 1456/1458 ISO 4540 RATING 8 to 10
2.6 - Corrosion resistance:
neutral salt spray test according to ASTM B 117 for 100 hours.
Evaluation according to ISO 4540 RATING 7 to 10

3.0 - TOLERANCES:
3.1 - Diameter: ISO f7
3.2 - OVALITY: HALF 'OF TOLERANCE ISO f7
3.3 - straightness errors': <0.5 / 2000

4.0 - LENGTH:
up to diam. 18 mm: 3 m. approx.
from 20 mm to 24 mm: 5 m. approx.
diam. 25 mm.: 6 m approx.

5.0 - Packaging:
PLASTIC TUBE - TUBE BOX - PAPER ON DEMAND, wooden crates (at cost).

6.0 - CERTIFICATION: According to EN 10204:2004 / 3.1

 

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