| Brass |
Low cost, low strength, heavy, free machining
|
CDA 360 |
Electronic hardware and contacts, fittings, numerous commercial products
|
+/-.0015 |
2.5
(High scrap return provides cost savings ) |
.6 |
| Copper Alloys |
Excellent electrical conductivity
|
TeCu, CA 145 |
Electrical contacts
|
+/-.0015 |
5.4 |
.7 |
|
Higher strength and excellent electrical conductivity
|
BeCu alloy 25 |
Electrical contacts
|
+/-.002 (Can be ordered to +/-.0002 ) |
30.0 |
.75 |
| Aluminum |
Designed for machining
|
2011 |
Electronic hardware, endless commercial products
|
Cold finish
+/-.0015 |
1.6 |
.6 |
|
Improved strength
|
2024 |
Electronic hardware, aircraft components
|
+/-.0015 |
2.2 |
.7 |
|
Good formability, weldability, and corrosion resistance
|
6061 |
Electronic hardware
|
Cold finish
+/-.0015
Extruded
+/-.009 |
0.8 |
.75 |
|
Higher strength
|
7075 |
Aircraft components
|
+/-.0015 |
2.3 |
|
| Steel |
Plain low carbon steel, poor machinability but good formability and weldability. Case harden only
|
1018 |
Rivets and parts requiring strong welds
|
Cold drawn
+.000/.002 |
0.75 |
3.0 |
|
Designed for good machinability
Case harden only
|
1215 |
Parts needing better formability or weldability than 12L14
|
Cold drawn
+.000/.002 |
0.95 |
1.5 |
|
Designed for excellent machinability
Case hardening only
|
12L14 |
Endless commercial products; probably more pounds used in turned products than any other bar stock
|
Cold drawn
+.000/.002 |
1 |
1 |
|
Excellent machinability w/o lead (Biadded)
Case hardening only
|
1215 Bi |
Same as 12L14, non-leaded replacement for 12L14
|
Cold drawn
+.000/.002 |
1.1 |
1 |
|
Higher carbon, higher strength, direct hardening
|
1137 |
Higher stress applications, gears, shafts, studs, etc.
|
Cold drawn
+.000/-.003 |
1.25 |
2.5 |
| Alloy Steel |
Direct hardening
|
4140 or 4142 |
Higher stress applications needing the strength of an alloy
|
Cold drawn
+.000/-.003 |
1.25 |
3.0 |
|
Designed for better machining w/lead additive; direct hardening
|
41L40 |
Higher stress applications needing the strength of an alloy
|
Cold drawn
+.000/-.003 |
1.4 |
2.7 |
|
.55% Ni, .50% Cr, .20% Mo, heat treatable and case hardening
|
8620 |
High stress applications needing the strength of an alloy.
|
Cold drawn
+.000/.002 |
1.8 |
2.7 |
|
Very high 1% carbon, .25% Ni,1.4% Cr, .08% Mo
|
52100 |
Bearing applications
|
Cold finished
Spheroidize annealed
+/- .006 |
2.0 |
5.1 |
| Stainless Steel |
Designed for machining, non-magnetic
|
303 |
Electronic hardware, automotive, aerospace, medical instruments, and many applications requiring corrosion resistance
|
Cold finished
+/- .002 |
4.5 |
2.7 |
|
Better weldability and formability, slightly more corrosion resistant
|
304 |
Applications needing formability or weldability
|
Cold finished
+/-.002 |
3.7 |
5.0 |
|
Better corrosion resistance
|
316 |
Medical implants and surgical instruments, aerospace
|
Cold finished
+/-.002 |
4.3 |
5.6 |
|
Free machining; less corosion resistant than 300 series; can be heat treated
|
416 |
Applications that need less corrosion resistance, more hardness, or lower cost
|
Cold finished- annealed
+/-.002 |
3.8 |
2.6 |
|
High carbon, can harden to RC 60
|
440°C |
Applications requiring stainless steel with highest hardness
|
|
5.9 |
5.0 |
|
Excellent corrosion resistance and heat treatable
|
17-4 PH |
Medical, aerospace, applications needing corrosion resistance and hardness
|
+/-.002 |
4.4 |
5.0 |
| Titanium |
High strength, light weight, good bio-compatibility
|
Ti-6Al-4V
Ti-6Al-4VEli |
Aircraft
Medical implants
|
Ground & polished
+/-.002 |
21.3 |
6 |
| Plastics |
Low cost plastic
|
PVC
Gray color |
Insulators
|
Ground
+/-.003 |
0.9 |
.8 |
|
Good machining
|
Nylon, extruded
"Natural" or "black" color |
Insulator, bearing, short runs of products that will be converted to injection molding
|
Ground
+.002/-.000 |
1.2 |
.75 |
|
Similar to nylon, better machinability
|
Delrin (acetal)
"Natural" or "black" color |
Insulator, bearing
|
Ground
+.002/-.000 |
1.5 |
.7 |
