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Reference Tables

CNC Reference Tables

Use these tables for lookup decisions: material SFM and Vc, tap drills, face-milling setup, tolerance, ISO acceptance, G-code, and maintenance benchmarks.

Reviewed: 2026-07-28Source: Reviewed against ISO 230, GB/T 17421, OEM documentation, and shop-floor calculator assumptions.

Tables provide starting points and acceptance references. Calculator pages still own live math, and guides explain the assumptions behind the table.

Open SFM to RPMOpen chip load

Material speed and feed tables

Material cutting speed reference

Material chart scope for SFM and Vc lookup before RPM and feed calculations.

Aluminum speeds and feeds

6061, 7075, cast aluminum, tool material, SFM, and chip-load starting ranges.

Steel speeds and feeds

Carbon and alloy steel speed/feed reference for planning and calculator handoff.

Stainless speeds and feeds

303, 304, 316, 17-4 PH ranges with work-hardening boundaries.

Titanium speeds and feeds

Ti-6Al-4V and Grade 2 starting points with heat-control cautions.

Nickel alloy speeds and feeds

Inconel, Hastelloy, Monel, and superalloy planning ranges.

Operation and workflow tables

Drill tap size chart

Tap drill handoff for thread percentage, metric taps, UNC, UNF, and release checks.

Face mill speeds and feeds

Face-mill chart with SFM, diameter, lead angle, inserts in cut, and feed workflow.

Boring bar reference

Boring speed and feed ranges by material, tool geometry, and overhang.

Typical cycle times

Benchmarks for quoting, capacity, and machining-time sanity checks.

Standards, tolerance, and code references

ISO 230 reference

Machine tool test family lookup before acceptance evidence review.

CNC tolerance chart

General machining tolerance planning ranges and inspection handoff.

Surface roughness conversion

Ra, Rz, Rt, microinch, and micrometer reference for drawing review.

G-code and M-code reference

Common setup, motion, spindle, coolant, tool, and work-offset codes.