Following are Chrome plated rod and bar technical parameters:
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 | ≤ 0.25 | |
ST52 | ≤0.22 | ≤1.6 | ≤0.55 | ≤0.04 | ≤0.04 | ||
20MnV6 | 0.16-0.22 | 1.30-1.70 | 0.10-0.50 | ≤0.035 | ≤0.035 | 0.10-0.20 | ≤0.30 |
42CrMo4 | 0.38-0.45 | 0.60-0.90 | 0.15-0.40 | ≤0.035 | ≤0.035 | 0.07-0.12 | 0.90-1.20 |
40Cr | 0.37-0.45 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | 0.80-1.10 | |
304 | ≤0.07 | ≤2 | ≤1 | ≤0.03 | ≤0.045 | 18-20 | |
420 | 0.16-0.25 | ≤1.5 | ≤1 | ≤0.03 | ≤0.04 | 12-14 | |
431 | 0.12-0.22 | ≤1.5 | ≤1 | ≤0.03 | ≤0.04 | 15-17 | |
430 | ≤0.12 | ≤1 | ≤0.75 | ≤0.03 | ≤0.04 | 16-18 |
MECHANCIAL PROPERTIES
Material | T.S (MPA) |
Y.S (MPA) |
Elongation % |
CONDITION |
CK45 | ≥610 | ≥355 | ≥15 | NORMALIZE |
CK45 | ≥800 | ≥630 | ≥20 | Q + T |
ST52 | ≥500 | ≥355 | ≥22 | NORMALIZE |
20MnV6 | ≥750 | ≥590 | ≥12 | NORMALIZE |
42CrMo4 | ≥980 | ≥850 | ≥14 | Q + T |
40Cr | ≥1000 | ≥800 | ≥10 | Q + T |
304 | ≥520 | ≥205 | ≥40 | |
420 | ≥635 | ≥440 | ≥20 | |
431 | ≥800 | ≥600 | ≥10 | |
430 | ≥450 | ≥205 | ≥22 |
Tolerance:
Diameter (mm) | ISO f7 (um) | ISO f8 (um) | g6 (um) |
6 <Φ≤10 | -13 to -28 | -13 to -35 | -5 to -14 |
10 <Φ≤18 | -16 to -34 | -16 to -43 | -6 to -17 |
18 <Φ≤30 | -20 to -41 | -20 to -53 | -7 to -20 |
30 <Φ≤50 | -25 to -50 | -25 to -64 | -9 to -25 |
50 <Φ≤80 | -30 to -60 | -30 to -76 | -10 to -29 |
80 <Φ≤120 | -36 to -71 | -36 to -90 | - 12 to -34 |
120 <Φ≤180 | -43 to -83 | -43 to -106 | -14 to -39 |
180 <Φ≤250 | -50 to -96 | -50 to -122 | -15 to -44 |
Wuxi Baiheng started in the steel pipe industry as early as 2001 in Wuxi city. We are not only manufacturer, but also exporter. We know all customers want to do comparison buying, we will do this for you.