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Is It Important that Precision Machinists Have Experience With Specific Materials?

Certainly this is the ideal situation and in today’s world it’s not too much to ask. For example, with copper machining, with its low inherent machinability rating (typically 20% as compared to free-cutting brass at 100%), you want a company who has that experience and knows how to machine it properly.

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At Bradhart Products, we apply precision machining processes to a variety of alloys including plastics, steels, aluminum, red metals and exotic materials. Here is a list of common materials that we machine:



Grades machined if not listed under material column specifically

1xxx series are essentially pure aluminium with a minimum 99% aluminium content by weight and can be work hardened.
2xxx series are alloyed with copper, can be precipitation hardened to strengths comparable to steel. 2024
3xxx series are alloyed with manganese, and can be work hardened.
4xxx series are alloyed with silicon. They are also known as silumin.
5xxx series are alloyed with magnesium.
6xxx series are alloyed with magnesium and silicon, are easy to machine, and can be precipitation hardened, but not to the high strengths that 2000 and 7000 can reach. 6061, 6063
7xxx series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminium alloy. 7075
8xxx series is a category mainly used for lithium alloys.
1xxx Carbon steels 1018, 1020, 1026, 1045, 1117, 1137, 1141, 1144, 12L14, 1215
2xxx Nickel steels
3xxx Nickel-chromium steels
4xxx Molybdenum steels 4140, 4340, 4340 Aircraft Quality (AMS 6414, 6415)
5xxx Chromium steels 52100
6xxx Chromium-vanadium steels 6150
7xxx Tungsten steels
8xxx Nickel-chromium-vanadium steels 8620, 8620H, 8640
9xxx Silicon-manganese steels
100 Series Austenitic chromium-nickel-manganese alloys
200 Series Austenitic chromium-nickel-manganese alloys
300 Series Austenitic chromium-nickel alloys: Chromium-nickel alloy can develop high strength by cold working. Non-magnetic, not heat treatable and has good formability. Additions of molybdenum can increase the corrosion resistance. Typical use: Food equipment, chemical equipment, architectural applications. Alloys: 301, 302, 303, 304, 305, 308, 309, 310, 314, 316, 317, 321, 330, 347, 384
400 Series Ferritic and martensitic chromium alloys: straight chromium alloy, magnetic, but can be hardened by heat treatment. Typical use: Fasteners, pump shafts, turbine blades Alloys: 403, 410, 414, 416, 420, 422, 431, 440, 440 CRES
500 Series heat-resisting chromium alloys
600 Series martensitic precipitation hardening alloys
Type 2205 the most widely used duplex (ferritic/austenitic) stainless steel grade. It has both excellent corrosion resistance and high strength.
Other Precipitation Hardening: Develop strength by precititation hardening reaction due to heat treatment. Typical use: valves, gears, petro-chemical equipment Alloys: 13-8, 15-5, 15-7, 17-4, 17-7 nickel, martensitic or austenitic
C36000 Free-Cutting Brass
C37700 Forging Brass
C38000 Architectural Bronze “Low Leaded”
C38500 Architectural Bronze
C54400 Phosphor Bronze “B-2” “Free Cutting”
C61400 Aluminum Bronze
C63000 Nickel Aluminum Bronze
C63020 Nickel Aluminum Bronze
C64200 Silicon Aluminum Bronze
C64210 Everdur 6421
C65100 Low Silicon Bronze “B”
C65500 High Silicon Bronze “A”
C65600 Everdur 656
C65610 Silicon Bronze
C65620 Silicon Bronze “AMS 4616”
C67300 Manganese Bronze
C67500 Manganese Bronze
C83600 Leaded Red Brass “SAE 40”
C84400 Leaded Semi-Red Brass
C86200 Manganese Bronze “SAE 430 A”
C86300 Manganese Bronze “SAE 430 B”
C86400 Manganese Bronze
C86500 Manganese Bronze “SAE 43”
C90500 Tin Bronze “SAE 62”
C90700 Tin Bronze “SAE 65”
C92200 Leaded Tin Bronze “Navy M”
C92700 Leaded Tin Bronze
C92900 Leaded Nickel Tin Bronze
C93200 High Leaded Tin Bronze “SAE 660”
C93400 High Leaded Tin Bronze
C93600 High Leaded Tin Bronze
C93700 High Leaded Tin Bronze “SAE 64”
C94300 High Leaded Tin Bronze
C94500 Medium Bronze
C95200 Aluminum Bronze
C95400 Aluminum Bronze “9C”
C95500 Nickel Aluminum Bronze “9D”
C95510 Nickel Aluminum Bronze (AMS4880)
C95520 Nickel Aluminum Bronze (AMS 4881)
C95800 Alpha Nickel Aluminum Bronze
C95900 Aluminum Bronze
Aeropace Industry C17200 (AMS 4533, 4534, 4650, 4651, QQ-C-530), C63000 (AMS 4640), C63020 (AMS 4590), C64200 (AMS 4631, 4634), C65620 (AMS 4616), C67300 (SAE J463, J461), C86300 (ASTM B-505, B-271, AMS 4862), C86400 (ASTM B-271), C95400 (ASTM B-505, B-271, AMS 4871, 4873), C95510 (AMS 4880), C95520 (AMS 4881)
Other Steels M-2 Tool Steel, LESCALLOY M50 VIM-VAR (AISI M50) steel Aircraft Quality
Plastics Acetal, Delrin, Nylon, Peek,Rulon, Teflon,  Torlon, UHMW, Vespel
Superalloys Hastelloy, Inconel, Waspaloy
Titanium Medical Grade for Implants
Phenolic Laminate
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Bearing Retainer with machined roller retention Bearing Cage and Cap Assembly Bearing cages or retainers how small they go Bearing Sleeve Machine tool bearing housing Security Detention (Prison Lock) Spinal Cross Connector (Impants) - Medical Split Cage Ball Retainer