Materials We Machine

Standard stock materials for energy, industrial, and precision applications. Tighter tolerances available on request.

Material Grade Key Properties Tolerance Common Applications
Steel
4140 Alloy Steel AISI 4140
Pre-hardened or annealed		 High strength, excellent fatigue resistance, heat-treatable, good machinability ±0.001"
±0.0005" on request		 Shafts Couplings Flanged spacers Bearing housings
1018 Mild Steel AISI 1018
Cold drawn		 Excellent weldability, case-hardenable, economical, widely available ±0.001" Mounting hardware Spacers Fixturing General industrial
Stainless Steel
303 Stainless UNS S30300
Free-machining		 Best machinability of SS grades, corrosion resistant, non-magnetic ±0.001"
±0.0005" on request		 Bushings Adapters Threaded fittings Instrument hardware
304 Stainless UNS S30400
Annealed		 Good corrosion resistance, weldable, widely available, general-purpose ±0.001" Sleeves Spacer rings Seal retainers Flow measurement hardware
17-4 PH Stainless UNS S17400
H900 / H1025		 High strength + corrosion resistance, precipitation hardened, excellent dimensional stability ±0.001"
±0.0005" on request		 Meter couplings Locking collars High-temp components Energy-critical hardware
Aluminum
6061 Aluminum T6 temper Excellent machinability, lightweight, good corrosion resistance, versatile ±0.001" Sensor housings Mounting standoffs Instrument adapters Prototypes
7075 Aluminum T6 / T651 temper Highest-strength aluminum, aerospace-grade, excellent fatigue life ±0.001"
±0.0005" on request		 High-load adapters Structural components Aerospace parts
Other
Brass C360
Free-machining		 Best machinability rating of any metal, excellent thread quality, corrosion resistant ±0.001" NPT / BSP adapters Thread reducers Instrument fittings Valve components

Don't see your material? Contact us — we regularly work with customer-supplied stock and additional alloys on request.