Dielectric Materials for Advanced Applications
Progress Report (October 2010 ~ February 2011) Xuewei Zhang and Markus Zahn
Appendix. Electrode Materials: Tech Specs and Numbering
Aluminum
Alloy / Tech Specs / Numbering6061 / (1) Most widely used aluminum alloy due to combination of strength, good corrosion resistance, and machinability.
(2) Anodized / 11
6061 / (1) Most widely used aluminum alloy due to combination of strength, good corrosion resistance, and machinability.
(2) Chrome-coated / 10
2024 / (1) Superior strength and good machinability. Most widely used aircraft alloy. Addition of copper improves strength, but decreases corrosion resistance.
(2) Unpolished (mill) / 12
7075 / (1) Exceptionally strong but still lightweight, with better corrosion resistance than Alloy 2024 due to the addition of zinc. Use for aircraft frames, keys, gears, and other high-stress parts.
(2) Unpolished (mill) / 13
Brass
Alloy / Tech Specs / Numbering360 / (1) Its lead content prevents successful welding but does provide lubrication to enable high-speed machining such as drilling, milling, and tapping with reduced tool wear and breakage. It is corrosion resistant and has a smooth finish that readily accepts plating. Not heat treatable.
(2) Unpolished (mill) / 4
464 / (1) This weldable alloy offers good corrosion resistance for saltwater and steam applications, as well as improved strength thanks to a high zinc content. Not heat treatable.
(2) Unpolished (mill) / 5
Bronze
Alloy / Tech Specs / Numbering932 / (1) It is considered the workhorse of all high-leaded bronzes. Due to the addition of lead, it is relatively soft and is readily machined into bushings and bearings. With smooth finish and nonsparking. Not heat treatable but corrosion resistant.
(2) Precision ground / 8
954 / (1) Most popular aluminum-bronze alloy, offering an ideal combination of high strength and corrosion resistance. It is heat treatable and performs well in applications such as pressure-bearing surfaces.
(2) Unpolished (mill) / 6
954 / (1) Most popular aluminum-bronze alloy, offering an ideal combination of high strength and corrosion resistance. It is heat treatable and performs well in applications such as pressure-bearing surfaces.
(2) Precision ground / 7
Copper
Alloy / Tech Specs / Numbering110 / (1) Minimum copper content of 99.9%. Good electrical conductivity, corrosion resistance, and high formability. Ideal for use in electrical applications such as bus bars, connectors, and gaskets. Not heat treatable.
(2) Unpolished (mill) / 2
182 / (1) Stronger, harder, and more wear resistant than pure copper. Difficult to machine. Commonly used in mold making, cable shields, and welding electrodes. Can be heat treated.
(2) Unpolished (mill) / 3
Iron
Alloy / Tech Specs / NumberingCast Gray Iron / (1) Features a close grain structure and moderately high strength. It has good machinability and responds well to fast heat treating. Excellent for valve bodies, bearing rings and seals, gears, spacers and bushings.
(2) Unpolished (mill) / 14
Stainless Steel
Alloy / Tech Specs / Numbering304 / (1) Most widely-used. Good weldability and formability. Maintains corrosion resistance up to 1500 °F. May become slightly magnetic when worked. Not heat treatable.
(2) Unpolished (mill) / 22
304 / (1) Most widely-used. Good weldability and formability. Maintains corrosion resistance up to 1500 °F. May become slightly magnetic when worked. Not heat treatable.
(2) Brushed (#4 Satin) / 21
309 / (1) Excellent temperature resistance. Similar composition to Type 304. Low carbon chromium-nickel (austenitic).
(2) Unpolished (mill) / 23
316 / (1) Higher molybdenum content provides better corrosion resistance than Type 304. Low carbon chromium-nickel (austenitic). Good weldability and temperature resistance.
(2) Unpolished (mill) / 24
321 / (1) Low carbon chromium-nickel (austenitic). Titanium provides superior weldability.
(2) Unpolished (mill) / 27
440C / (1) High-carbon stainless steel offers good wear resistance and is one of the hardest stainless steels when heat treated.
(2) Unpolished (mill) / 25
17-4 PH / (1) High strength with better corrosion resistance than Type 15-5 PH due to its slightly higher chromium content. Also known as Type 630. Can be strengthened by precipitation hardening at low temperatures.
(2) Unpolished (mill) / 26
303 / (1) Sulfur and phosphorus increase machinability. Low-carbon chromium-nickel (austenitic). Good corrosion, temperature resistance. May become slightly magnetic when worked. Not heat treatable.
(2) Unpolished (mill) / 20
Steel
Alloy / Tech Specs / Numbering1018 / (1) General-purpose low-carbon steel, easy to cold form, bend, braze, and weld.
(2) Unpolished (mill) / 18
1018 / (1) General-purpose low-carbon steel, easy to cold form, bend, braze, and weld.
(2) Nickel-coated / 15
4140/4142 / (1) Main alloy elements are chromium and molybdenum, which give it good fatigue, abrasion, and impact resistance. Readily formed and machined in its annealed state and can be heat treated to increase toughness and wear resistance.
(2) Unpolished (mill) / 16
4140/4142 / 17
Titanium
Alloy / Tech Specs / NumberingUltra Corrosion
Resistant Pure Titanium (Grade 2) / (1) Commercially pure (98.9%) titanium, offering the best combination of strength, formability, and weldability. 40% lighter than steel, it has a high strength-to-weight ratio and is durable and corrosion resistant.
(2) Unpolished (mill) / 1
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