Transcript
Alchrome (Iron-Chromium-Aluminum) FeCrAl Electric Resistance Heating Elements
Alchrome or iron-chrome-aluminum (FeCrAl) resistance alloys are developed with the change in composition of chromium and aluminum elements. They offer excellent anti-oxidization, anti- sulfur and anti-cementite properties. They also provide the benefits such as small density, high surface load, high electric resistivity, high application temperature, prolong life service and affordability. These heating elements are used in the diverse applications in the metal industry in processing such as melting and holding. Iron-chromium-aluminum (FeCrAl) alloys have higher service temperature as compare to nickel-chromium alloys. For furnace applications, FeCrAl proves to be an economical material because of its lower cost and a longer service life. The heating elements made of FeCrAl provide sufficiently longer service life as compare to Nichrome materials. They are considered as the best fit heating elements providing large power, prolong life, small weight, easily designed to existing power controls and supply. They offer high reliability and do not need the regular maintenance.
The elements will function at the higher power output than a standard design of radiation elements. They can also function at voltage lower than the supply. In various conditions they are resistant to ageing; hence variable voltage supply is not necessary. The oxide produced upon heating is of non-spalling nature therefore neither scaling nor contaminants interact with the heating element that ensures the suitable performance of the materials in the furnace. Outstanding form stability at the high temperatures. Heanjia Super-Metals can describe its capability in the production of heating elements under the specific needs for particular applications. Why FeCrAl resistance heating alloys are superior to Nickel-Chromium alloys Larger operation temperature: FeCrAl alloys can attain the maximum service temperature up to 1400oC or 2550oF whereas Nickel-Chrome alloys have maximum application temperature up to 1200oC or 2190oF Longer service life: FeCrAl heating elements have two to four times longer life than Nickel-Chrome alloys when they function in air at the identical temperature limits. Larger surface load bearing capacity: Higher service temperature and longer life enable the elements to withstand higher surface load to be applied on the Kanthal elements. Superior oxidation resistance The alumina oxide produced on FeCrAl alloys is more consistent and hence less contaminated. It acts as superior diffusion wall for greater electrical insulator and higher resistance to carburization conditions than chromium oxide produced by Nickel-Chromium alloys. Smaller Density: FeCrAl alloys have lower density than Nickel-Chromium alloys. It refers to more availability of equivalent elements that can be produced from the same weight material. High resistivity: FeCrAl alloys have higher electric resistivity than Ni-Cr alloys hence they are made in larger cross section which upgrades the element’s life. It is particularly considerable in fine wire. For identical cross-section area, these become more weight – savvy than that of Ni-Cr alloys. Additionally, FeCrAl alloys are hardly influenced by cold and hot processing. Greater yield strength : Offering larger yield strength in FeCrAl alloys means small alteration in cross-section area while coiling wire.
Higher resistance to sulfur: In conditions containing sulfuric compounds and in the availability of pollutants such as sulfur on the wire material. FeCrAl alloys offer greater corrosion resistance in hot state. FeCrAl alloys have greater corrosion resistance in the hot form. Nickel-Chrome alloys are intensely corroded in sulfur conditions. Service life The resistance heating alloys upon heating produce an oxide layer on the outer surface that reduces the oxidation level of the internal metal. For this, the oxide layer should be firm to prevent the interaction of diffusion gases and metal ions. It should also be thin and adherent to metal in the temperature fluctuations. The security oxide layer on FeCrAl alloys produced at temperatures exceeding 1000oC or 1830oF is mainly of alumina. The shade is light grey while at lower temperature limits below 1000oC or 1830of the oxide shade becomes darker. The alumina has outstanding electrical insulating characteristics and great chemical resistance to the various compounds. Prevention of Corrosion The moderate to severely corrosive agents can significantly decrease the element’s life. There can be several types of corrosive agents such as: Steam: It decreases the heating element’s life. Halogens: various types of halogens like fluorine (F), chlorine (Cl), bromine (Br) and iodine (I) intensely corrode the most of high temperature alloys at medium to low temperature limits. Sulfur: In the sulfur based conditions, FeCrAl alloys offer greater reliability as compare to nickel based alloys. Iron-Chromium-Aluminum alloys are specifically stable in the oxidizing conditions of sulfur but the reducing conditions of sulfur severely attack the element. Salts & oxides: Alkaline salts such as of boron in high magnitudes are of attacking nature towards FeCrAl elements. Ceramic support material: More care should be given to ceramic supports that are used directly with the heating elements. The firebricks in furnace are lined with alumina up to 45%. In the elevated temperature operations, the concentrated alumina firebricks are commonly used. Applications of FeCrAl electric resistance heating elements
Irons, air blowers,, oil heaters, glow plugs, hot plates, ovens, grills, toaster ovens, frying utensils, deep fryers, rice cooker, boilers, immersion heaters, dishwashers, coffee-makers, radiators, storage heaters, panel heaters, infrared heaters, heating plates, ceramic pots, cast iron plates, kettles, domestic ovens, metal dies, refrigerators, defrosting, electric blankets & pads, floor heating, plastic moulding dies, water heaters, soldering irons, liquid heating, storage heaters, boiling plates, air guns, hobby kilns, space heating, industrial infrared dryers, panel heaters, waffle irons, stress relief annealing of welded components, stationary hair dryers, fan heaters, land dryers, laundry dryers, convection heaters, low-watt aquarium heaters, tumble driers, regulating resistors, instantaneous water heaters, steam generators and showers.
FeCrAl forms specification: Dia (mm)
.10 mm .12 mm .15 mm .17 mm
Sectional area (mm2)
Surface area/ M (cm2/m)
CrAl 25-5 Weight/m kg/m
.008 mm2 .011 mm2 .017 mm2 .023 mm2
3.142 cm2/m 3.8 cm2/m 4.7 cm2/m 5.3 cm2/m
.00006 kg/m .0001 kg/m .00013 kg/m .0002 kg/m
Ohm/m at 20oC 180.8 Ohm/m 125.6 Ohm/m 80.4 Ohm/m 62.56 Ohm/m
CrAl 21-6 Weight/m kg/m .0001 kg/m .0001 kg/m .00012 kg/m .0002 kg/m
Ohm/m at 20oC
CrAl 27-7 Weight/m kg/m
Ohm/m at 20oC
184.6 Ohm/m 128.2 Ohm/m 82.1 Ohm/m 63.88 Ohm/m
.0000558 kg/m .0001 kg/m .00013 kg/m .0002 kg/m
194.8 Ohm/m 135.3 Ohm/m 86.58 Ohm/m 67.41 Ohm/m
.21 mm .25 mm .27 mm
.0346 mm2 .049 mm2 .057 mm2
6.597 cm2/m 7.85 cm2/m 8.48 cm2/m
.00025 kg/m .00034 kg/m .00041 kg/m
41 Ohm/m 28.9 Ohm/m 24.8 Ohm/m
.29 mm .31 mm .35 mm
.066 mm2 .075 mm2 .096 mm2
9.11 cm2/m 9.74 cm2/m 11 cm2/m
.00047 kg/m .00054 kg/m .00068 kg/m
21.5 Ohm/m 18.81 Ohm/m 14.8 Ohm/m
.40 mm .45 mm .50 mm .60 mm .70 mm .80 mm .90 mm 1 mm 1.20 mm 1.40 mm 1.60 mm 1.80 mm 2 mm 2.20 mm 2.50 mm 2.80 mm 3 mm 3.50 mm 4 mm 4.50 mm 5 mm 5.50 mm 6 mm 6.50 mm 7 mm
.13 mm2 .16 mm2 .19 mm2 .283 mm2 .385 mm2 .503 mm2 .64 mm2 .79 mm2 1.131 mm2 1.539 mm2 2.011 mm2 2.545 mm2 3.142 mm2 3.801 mm2 4.90 mm2 6.158 mm2 7.069 mm2 9.62 mm2 12.57 mm2 15.90 mm2 19.63 mm2 23.76 28.27 mm2 33.18 mm2 38.48 mm2
12.57 cm2/m 14.14 cm2/m 15.71 cm2/m 18.85 cm2/m 21.99 cm2/m 25.13 cm2/m 28.3 cm2/m 31.42 cm2/m 37.70 cm2/m 43.98 cm2/m 50.27 cm2/m 56.55 cm2/m 62.83 cm2/m 69.12 cm2/m 78.54 cm2/m 87.96 cm2/m 94.25 cm2/m 110 cm2/m 125.7 cm2/m 141.1 cm2/m 157.1 cm2/m 172.8 cm2/m 188.5 cm2/m 204.2 cm2/m 219.9 cm2/m
.00089 kg/m .00113 kg/m .0014 kg/m .0020 kg/m .003 kg/m .006 kg/m .0045 kg/m .0056 kg/m .00803 kg/m .01093 kg/m .01428 kg/m .0180 kg/m .0223 kg/m .0269 kg/m .03485 kg/m .0437 kg/m .0501 kg/m .068 kg/m .089 kg/m .1129 kg/m .1394 kg/m .169 kg/m .200 kg/m .235 kg/m .273 kg/m
11.3 Ohm/m 8.93 Ohm/m 7.23 Ohm/m 5.02 Ohm/m 3.7 Ohm/m 2.83 Ohm/m 2.23 Ohm/m 1.81 Ohm/m 1.256 Ohm/m .9224 Ohm/m .7063 Ohm/m .558 Ohm/m .452 Ohm/m .373 Ohm/m .289 Ohm/m .2306 Ohm/m .2009 Ohm/m .1476 Ohm/m .1130 Ohm/m .08928 Ohm/m .0723 Ohm/m .05977 Ohm/m .05022 Ohm/m .0428 Ohm/m .0369 Ohm/m
.00025 kg/m .00034 kg/m .0004065 kg/m .000469 kg/m .00054 kg/m .0006830 kg/m .0009 kg/m .00113 kg/m .0014 kg/m .00201 kg/m .003 kg/m .0036 kg/m .0045 kg/m .0056 kg/m .008030 kg/m .011 kg/m .0143 kg/m .0181 kg/m .02231 kg/m .027 kg/m .0349 kg/m .04372 kg/m .0501 kg/m .06831 kg/m .08922 kg/m .1129 kg/m .1394 kg/m .1687 kg/m .2007 kg/m .2356 kg/m .2732 kg/m
41.9 Ohm/m 29.54 Ohm/m 25.33 Ohm/m
.00025 kg/m .00035 kg/m .00041 kg/m
44.17 Ohm/m 31.17 Ohm/m 26.72 Ohm/m
21.95 Ohm/m 19.21 Ohm/m 15.07 Ohm/m
.00047 kg/m .00054 kg/m .00068 kg/m
23.16 Ohm/m 20.27 Ohm/m 15.90 Ohm/m
11.54 Ohm/m 9.12 Ohm/m 7.4 Ohm/m 5.13 Ohm/m 3.77 Ohm/m 2.89 Ohm/m 2.28 Ohm/m 1.85 Ohm/m 1.282 Ohm/m .9419 Ohm/m .7212 Ohm/m .5698 Ohm/m .4615 Ohm/m .3814 Ohm/m .2954 Ohm/m .2355 Ohm/m .2051 Ohm/m .1507 Ohm/m .1154 Ohm/m .09117 Ohm/m .074 Ohm/m .061 Ohm/m .0513 Ohm/m .044 Ohm/m .038 Ohm/m
.00089 kg/m .00112 kg/m .0014 kg/m .002007 kg/m .0027 kg/m .003569 kg/m .0045 kg/m .0056 kg/m .008030 kg/m .011 kg/m .0143 kg/m .0181 kg/m .0223 kg/m .027 kg/m .035 kg/m .044 kg/m .0502 kg/m .06831 kg/m .08922 kg/m .113 kg/m .1394 kg/m .169 kg/m .2007 kg/m .236 kg/m .273 kg/m
12.18 Ohm/m 9.62 Ohm/m 7.79 Ohm/m 5.411 Ohm/m 3.976 Ohm/m 3.044 Ohm/m 2.41 Ohm/m 1.95 Ohm/m 1.4 Ohm/m .994 Ohm/m .7610 Ohm/m .6013 Ohm/m .49 Ohm/m .4025 Ohm/m .312 Ohm/m .248 Ohm/m .2165 Ohm/m .159 Ohm/m .122 Ohm/m .09620 Ohm/m .0779 Ohm/m .0644 Ohm/m .05411 Ohm/m .04611 Ohm/m .0398 Ohm/m
FeCrAl wire mesh FeCrAl Wire Mesh Hole(mm) 8 mm 8 mm 8 mm 8 mm 10 mm 12 mm 17 mm 20 mm 20 mm 20 mm 25 mm 30 mm 34 mm 40 mm 44 mm 44 mm 44 mm 40 mm 44 mm 60 mm
Wire Dia(mm) 21 mm 21 mm 22 mm 22 mm 23 mm 24 mm 24 mm 33 mm 32 mm 30 mm 30 mm 38 mm 33 mm 35 mm 35 mm 35 mm 35 mm 35 mm 35 mm 38 mm
Iron chromium aluminum wire mesh performance Chemical 1Cr13AL4 composition Cr 12.0-15.0 AI 4.0-6.0 Fe Bal.
Width(m) 2.375 m 2.375 m 2.475 m 2.475 m 1.94 m 1.557 m 0.94 m 1.02 m 1m 0.97 m 0.71 m 0.69 m 0.49 m 0.425 m 0.367 m 0.367 m 0.367 m 0.425 m 0.367 m 0.273 m
1Cr21AL4 17.0-21.0 2.0-4.0 Bal.
Weight(Kg/sqm) 0.8 Kg/sqm 0.8 Kg/sqm 0.7 Kg/sqm 0.7 Kg/sqm 0.6 Kg/sqm 0.559 Kg/sqm 0.55 Kg/sqm 0.25 Kg/sqm 0.27 Kg/sqm 0.3 Kg/sqm 0.3 Kg/sqm 0.15 Kg/sqm 0.25 Kg/sqm 0.21 Kg/sqm 0.21 Kg/sqm 0.21 Kg/sqm 0.21 Kg/sqm 0.21 Kg/sqm 0.21 Kg/sqm 0.15 Kg/sqm
0Cr21AL6 19.0-22.0 5.0-7.0 Bal.
0Cr23AL5 20.0-23.5 4.2-5.3 Bal.
Mesh/Inch 0.5 1 0.5 1 0.6 1 0.6 1 1 1 1 1 1 1 0.6 0.7 0.9 1 1 1
0Cr25AL5 23.0-26.0 4.5-6.5 Bal.
Gauge(SWG) 2.5 SWG 2.5 SWG 1.84 SWG 1.84 SWG 1.69 SWG 1.8 SWG 2.57 SWG 0.587 SWG 0.685 SWG 0.846 SWG 1.125 SWG 0.3 SWG 1.06 SWG 0.83 SWG 0.912 SWG 0.912 SWG 0.912 SWG 0.83 SWG 0.88 SWG 0.66 SWG
0Cr21AL6Nb 21.0-23.0 5.0-7.0 Bal.
0Cr27AL7Mo2 26.5-27.8 6.0-7.0 Bal.
Re Others Highest use temperature (℃ ) Melting point density(g/cm³) Resistivity(μΩ·m，20℃ ) Tensile strength (Mpa) Elongation Count of repeated bending Fast life (h / ℃ ) Specific heat (J/g ℃ ) Coefficient of thermal conductivity (KJ/m.h ℃ ) Linear expansion coefficient of A 10-6 x / ℃ (20 ~ 1000 ℃ ) Hardness Microstructure Magnetic
Suitable 950 oC 1450 oC 7.40 1.25±0.08 588 to 735 Mpa ≥16 % ≥5 0.490
Suitable 1100 oC 1500 oC 7.35 1.23±0.06 637 to 784 Mpa ≥12 % ≥5 ≥80/1250 0.490
Suitable 1250 oC 1500 oC 7.16 1.42±0.07 637 to 784 Mpa ≥12 % ≥5 ≥80/1300 0.520
Suitable 1250 oC 1500 oC 7.25 1.35±0.06 637 to 784 Mpa ≥12 % ≥5 ≥80/1300 0.460
Suitable 1250 oC 1500 oC 7.10 1.42±0.07 637 to 784 Mpa ≥12 % ≥5 ≥80/1300 0.494
Suitable nb:0.5 1350 oC 1510 oC 7.10 1.45±0.07 637 to 784 Mpa ≥12 % ≥5 ≥80/1350 0.494
Suitable nb:0.5 1400 oC 1520 oC 7.10 1.53±0.07 637 to 784 Mpa ≥10 % ≥5 ≥80/1350 0.494
52.7
46.9
63.2
60.2
46.1
46.1
45.2
15.4
13.5
14.7
15.0
16.0
16.0
16.0
200 to 260 HB ferrite Yes
200 to 260 HB ferrite Yes
200 to 260 HB ferrite Yes
200 to 260 HB ferrite Yes
200 to 260 HB ferrite Yes
200 to 260 HB ferrite Yes
200 to 260 HB ferrite Yes
Electric resistivity data
Dia. (mm)
Cross sectional area(mm2)
0.10 0.12 0.15 0.17 0.19 0.21 0.25
0.0078 0.0113 0.0177 0.0227 0.0284 0.0346 0.0491
1Cr23Al5 Resistivity (μ Ω • m 1.25± 0.08) Resistance Length per Weight per per meter kg(m/kg) Meter(kg/m) (20º C Ω /m) 173.1 17683 0.0000566 119.5 12206 0.0000819 76.4 7793 0.000128 59.5 6076 0.000165 47.5 4854 0.00206 35.5 3986 0.000276 27.5 2809 0.000356
0Cr25Al5 Resistivity (μ Ω • m1.42± 0.07) Resistance Length per Weight per per meter kg(m/kg) Meter(kg/m) (20º C Ω /m) 180.6 17933 0.0000558 125.6 12453 0.0000803 80.4 7970 0.000125 62.6 6205 0.000161 50.1 4959 0.000201 41.0 4066 0.000246 28.9 2870 0.000346
0Cr21Al6 Resistivity (µ Ω • m 1.42± 0.07) Resistance Length per Weight per per meter kg(m/kg) Meter(kg/m) (20º C Ω /m) 180.6 17905 0.0000558 125.6 12360 0.0000809 80.4 7891 0.000128 62.6 6153 0.000163 50.1 4918 0.000203 41.0 4037 0.000248 28.9 2844 0.000352
0.27 0.29 0.31 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90 1.00 1.20 1.40 1.60 1.80 2.00 2.20 2.50 2.80 3.00 3.50 4.00 4.50 5.00 5.50 6.00 6.50 7.00
0.0573 0.0661 0.0755 0.0962 0.1257 0.1590 0.1963 0.283 0.385 0.503 0.636 0.785 1.131 1.539 3.01 2.54 3.14 3.80 4.91 6.16 7.07 9.62 12.57 15.90 19.63 23.80 28.30 33.20 38.50
21.9 19.1 16.8 14.0 10.7 8.49 6.88 4.77 3.51 2.69 2.12 1.72 1.194 0.877 0.672 0.532 0.430 0.355 0.275 0.191 0.140 0.107 0.0849 0.0688 0.0568 0.0477 0.0407 0.0351 173.1
2407 2087 1827 1434 1097 867 703 496 358 274 217 176 122 89.6 68.6 54.3 43.9 36.3 28.1 19.5 14.3 11.0 8.67 7.03 5.80 4.88 4.15 3.58 17683
0.000447 0.000513 0.000583 0.000697 0.000911 0.00115 0.00142 0.00205 0.00279 0.00365 0.00461 0.00569 0.00820 0.01116 0.01457 0.01842 0.02277 0.02755 0.03849 0.05126 0.06975 0.09113 0.1153 0.1423 0.1726 0.2052 0.2407 0.2791 0.0000566
Dia. (mm)
Cross sectional area(mm2)
0Cr21Al4 Resistivity μ Ω • m 1.23± 0.06 (20º C Ω /m) Length per Weight per Resistance kg(m/kg) Meter(kg/m)
24.8 21.5 18.8 14.8 11.3 8.93 7.23 5.02 3.69 2.83 2.23 1.808 1.256 0.922 0.706 0.558 0.452 0.374 0.289 0.231 0.201 0.1476 0.1130 0.0893 0.0723 0.0598 0.0502 0.0428 0.0369
2460 2132 1866 1464 1121 886 717 498 366 280 221 179.5 124.5 91.5 70.1 55.5 44.8 37.0 28.7 22.9 19.92 14.64 11.21 8.86 7.17 5.92 4.98 4.24 3.66
0.000407 0.000469 0.000536 0.000683 0.000892 0.001129 0.001394 0.00201 0.00273 0.00357 0.00452 0.00557 0.00803 0.01093 0.01427 0.01803 0.0223 0.0270 0.0349 0.0437 0.0502 0.0683 0.0892 0.1129 0.1394 0.1690 0.201 0.236 0.273
0Cr21Al6Nb Resistivity (μ Ω • m 1.45± 0.07) Resistance Length per Weight per per meter kg(m/kg) Meter(kg/m)
24.8 21.5 18.8 14.8 11.3 8.93 7.23 5.02 3.69 2.83 2.23 1.808 1.256 0.922 0.706 0.558 0.452 0.374 0.289 0.231 0.201 0.1476 0.1130 0.0893 0.0723 0.0598 0.0502 0.0428 0.0369
2437 2113 1849 1452 1111 878 711 494 362 278 220 177.9 123.5 90.8 69.5 54.9 44.5 36.8 28.4 22.7 19.8 14.5 11.1 8.78 7.11 5.87 4.94 4.21 3.63
0.000410 0.000473 0.000541 0.000689 0.000900 0.001138 0.001406 0.002026 0.002751 0.003601 0.004554 0.005620 0.008098 0.01102 0.01439 0.01819 0.02248 0.02720 0.03516 0.04411 0.05062 0.06888 0.09000 0.1138 0.1406 0.1704 0.2026 0.2377 0.2757
0Cr27Al7Mo2 Resistivity (μ Ω • m 1.53± 0.07) Resistance Length per Weight per per kg(m/kg) Meter(kg/m)
per meter 0.10 0.12 0.15 0.17 0.19 0.21 0.25 0.27 0.29 0.31 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90 1.00 1.20 1.40 1.60 1.80 2.00 2.20 2.50 2.80 3.00 3.50 4.00 4.50 5.00 5.50
0.0078 0.0113 0.0177 0.0227 0.0284 0.0346 0.0491 0.0573 0.0661 0.0755 0.0962 0.1257 0.1590 0.1963 0.283 0.385 0.503 0.636 0.785 1.131 1.539 3.01 2.54 3.14 3.80 4.91 6.16 7.07 9.62 12.57 15.90 19.63 23.80
156.6 108.8 69.6 54.2 43.4 35.5 25.1 21.5 18.6 16.3 12.8 9.79 7.73 6.26 4.35 3.20 2.45 1.93 1.57 1.09 0.799 0.612 0.483 0.392 0.324 0.251 0.1740 0.1278 0.0979 0.0773 0.0626 0.0518 0.0435
(20º C Ω /m) 17452 12033 7692 5988 4785 3937 2770 2375 2058 1802 1414 1082 855 694 480 353 270 213 173 120 88.4 67.7 53.56 43.33 35.80 27.71 19.25 14.14 10.82 8.55 6.93 5.72 4.81
0.0000573 0.0000831 0.000130 0.000167 0.000209 0.000254 0.000361 0.000421 0.000486 0.000555 0.000707 0.000924 0.00117 0.00144 0.00208 0.00283 0.003697 0.004675 0.005770 0.008313 0.01131 0.01477 0.01867 0.02308 0.02793 0.03609 0.05196 0.07071 0.09239 0.1169 0.1443 0.1749 0.2080
184.6 128.2 82.1 63.9 51.1 41.9 29.5 25.0 22.0 19.2 15.1 11.54 9.12 7.38 5.13 3.77 2.88 2.28 1.85 1.282 0.942 0.721 0.570 0.462 0.381 0.295 0.205 0.1510 0.1154 0.0912 0.0738 0.0610 0.0513
17933 12453 7970 6205 4968 4066 2870 2460 2131 1866 1464 1121 886 717 498 366 280 221 179.5 124.5 91.5 70.1 55.5 44.8 37.0 28.7 19.92 14.64 11.21 8.86 7.17 5.92 4.98
0.0000558 0.0000803 0.000125 0.000161 0.000201 0.000246 0.000349 0.000407 0.000469 0.000536 0.000683 0.000892 0.001129 0.001394 0.00201 0.00273 0.00357 0.00452 0.00557 0.00803 0.01093 0.01427 0.01803 0.0229 0.0270 0.0349 0.052 0.0683 0.0892 0.1129 0.1394 0.1690 0.201
meter(20º C Ω /m) 194.8 135.3 80.6 67.4 54.0 44.2 31.2 26.7 23.2 20.3 15.9 12.19 9.62 7.79 5.41 3.98 3.04 2.41 1.95 1.35 0.994 0.761 0.601 0.487 0.402 0.312 0.216 0.159 0.1218 0.0962 0.0779 0.0644 0.0541
17933 12453 7970 6205 4968 4066 2870 2460 2132 1866 1464 1121 886 717 498 366 280 221 179.5 124.5 91.5 70.1 55.5 44.8 37.0 28.7 19.92 14.64 11.21 8.86 7.17 5.92 4.98
0.0000558 0.0000803 0.000125 0.000161 0.000201 0.000246 0.000349 0.000407 0.000469 0.000536 0.000683 0.000892 0.001129 0.001394 0.00201 0.00273 0.00357 0.00452 0.00557 0.00803 0.01093 0.01427 0.01803 0.0229 0.0270 0.0349 0.052 0.0683 0.0892 0.1129 0.1394 0.1690 0.201
6.00 6.50
28.30 33.20
0.0371 0.0320
4.09 3.53
Contact Us Heanjia Super-Metals CO., Ltd 3002 Harvard Ave E, Seattle Washington-98102 United States Phone- 12068907337 Email:
[email protected] Web- www.super-metals.com
0.2440 0.2830
0.0437 0.0377
4.24 3.66
0.236 0.273
0.0461 0.0398
4.24 3.66
0.236 0.273
