Projects 420 Stainless Component
This 420 stainless-steel example helps buyers prepare an RFQ for a 1000 × 600 × 200 mm component requiring 3-axis / 4-axis CNC milling, polishing and a project-specific ±0.01 mm tolerance. Material condition and the timing of heat treatment must be agreed before final dimensions are planned.
420 stainless steel
1000 × 600 × 200 mm
1 piece / low volume
3-axis / 4-axis milling
Polishing
±0.01 mm
420 stainless steel may be supplied annealed or in a hardened condition, and machinability changes accordingly. The customer drawing or RFQ should state hardness, heat-treatment responsibility, corrosion and polishing expectations, and whether critical dimensions apply before or after thermal processing.
The supplied state affects cutting strategy, achievable stock removal and tool life. Heat-treatment responsibility and target hardness should be confirmed before deciding which dimensions are left for later finishing.
Tool condition can influence size, finish and process stability in 420 stainless steel. Roughing allowance, semi-finishing and any post-treatment correction stock should be assigned to the features that carry the drawing requirement.
Polishing can alter edges and local dimensions, while heat treatment can influence geometry. The drawing should therefore state whether acceptance applies before or after those operations and which surfaces receive cosmetic or functional finishing.
Drawing Review → 420 Condition and Hardness Confirmation → Heat-Treatment Sequence Planning → Rough Milling with Reserved Stock → Finish Machining and Polishing → Final-State Inspection
Drilling, threads, grinding or post-treatment correction are included only when the current drawing and quotation define them.
CMM, micrometer, bore gauge or height gauge may be selected from the actual feature and datum scheme. Surface roughness measurement may support polished-surface requirements, and hardness testing is defined when heat-treatment acceptance is part of the order. No equipment is assumed before drawing review.
This example helps customers clarify material condition, heat-treatment timing, stock allowance, polishing and the final dimensional state required for large 420 stainless components.
Large H13 tool-steel work where material condition, datum transfer and polishing allowance shape the machining plan.
Large aluminum milling where alloy, stock flatness, workholding and cosmetic surfaces guide the finishing plan.
Stainless-steel milling where grade, heat, deflection, datum transfer and measurement conditions require early definition.
Send the model, drawing, 420 condition, target hardness, heat-treatment sequence, polishing surfaces, quantity and final-state tolerances.