It is safe to say that a vast amount of our experience lies in the work we do with stainless steel. Our technology, tools and skilled workers have evolved with the many changes that come in the industry. We educate our team and acquire the technologies required to keep up with the many projects that we happen upon.

By combining the technologies that japan has patented, along with newer CNC machines, we are able to produce precision machined stainless steel parts at speeds not even attempted just a few short years ago.

Stainless Steel Machining Benefits

High quality, carefully maintained tooling is a key to successful stainless steel machined parts. This is why PTJ maintains a complete in-house tooling capability. Additional benefits come from the extensive selection of automated machining equipment at PTJ (including CNC Swiss, multi-spindle and CNC milling equipment under Esprit CAD/CAM control.)

Grades Of SS Parts We Can Work With

We pride ourselves on our industry experience and unparalleled skills to custom fabricate, machine, and weld stainless steel material in the below types and grades:

Material Specifications Machining Cost Factor Industries & Applications
Stainless Steel Alloy 303 303 does not respond to heat treatment, but can be cold worked to increase tensile strength and hardness. 2.7 Bolts and nuts/Shafts/Gears/Aircraft components/Screws
Stainless Steel Alloy 304 304 does not respond to heat treatment, but can be cold worked to increase tensile strength and hardness. 5.0

Bolts and nuts/Screw/Aerospace components/Automotive components/Instrumentation
Automotive components

Stainless Steel Alloy 316 316 can be readily cold worked, but annealing afterwards is recommended to remove stresses. 5.6 Bolts and nuts/Laboratory equipment/Valve components/Marine equipment
Stainless Steel Alloy 430 FR 430FR withstands moderate cold work and can be forged and annealed. 2.7 Solenoid valves/Injectors
Stainless Steel Alloy 440 440 can be forged, heat treated, and annealed. 0.8 Pins/Surgical and dental parts/Valve components/Bearings
Stainless Steel Alloy 17-4 PH 17-4 PH can be heat treated and annealed. 5.0 Shafts/Seals/Medical equipment/Aerospace components


Completed Case Studies


Qualified Engineers


Cnc Machine Center


Skilled Workers
View Some Stainless Steel Machining Case Studies

Custom CNC Stainless Steel Parts

Although machining custom stainless steel parts is highly challenging, customers cannot afford unacceptable delivery delays. Mastering technical challenges while maintaining an uninterrupted reliable supply is an important core competency at PTJ Prototype Shop. The PTJ team of manufacturing professionals knows the distinctive properties of all the 150 different metal alloys in the Stainless category, and adjust the production process to maximize production efficiency.


Screw Centrifugal Impeller

Up to a 24`` diameter and can also grind the Hirth Coupling on the part(s) as needed.

Special Flange Base

Passivation stainless steel cnc machining silver machine special flange base

Solar Fan Leaf

China Mechanical Fan, Mechanical Fan from China Supplier

Lathe Stainless Steel Parts

Muti-Axis turning and milling machining stainless steel parts

Non Standard Shaft

Custom cnc machining manufacturer of stainless steel flexible shaft

Stainless Steel Bushing

Advanced 0.005mm Micro Precision Engraving
Generalize All Types of Surface Treatments Technologies

View our surface treatments list below, then get in touch with us