A2 Air-Hardening Tool Steel: A2 is a chromium-molybdenum-vanadium air-hardening cold-work tool steel balancing wear resistance, toughness and dimensional control.
Download Mozaic A2 Air-Hardening Tool Steel specification reference (PDF)
A2 Air-Hardening Tool Steel — Technical and Purchasing Reference
| Item | Guidance |
|---|---|
| Material / product designation | A2 Air-Hardening Tool Steel |
| Relevant purchasing specification | ASTM A681 A2 |
| Material / delivery condition | Specify annealed machining condition or final hardness after treatment |
| Common machining or wear uses | Punches, dies, gauges and general precision tooling |
| Service/selection consideration | A2’s hardening response and wear performance differ from D2 and oil-hardening O1. |
| Mozaic bar-processing scope | Custom OD grinding, polishing, straightening, cutting and packaging by inquiry |
Reference information only, not a certified melt analysis, mechanical test report or inventory guarantee. Use the current governing material/product specification and lot-specific mill documentation to qualify any order.
Application Selection and Material Limitations
A2’s hardening response and wear performance differ from D2 and oil-hardening O1. Common uses include punches, dies, gauges and general precision tooling. Suitability depends on grade chemistry, dimensions, strength and condition, the working environment and any surface or dimensional specifications. A related material should not be substituted solely because its marketing name sounds similar.
Centerless Grinding and Bar Finishing
Mozaic Precision Metals can review sourcing and centerless grinding, bar straightening, polishing, chamfering, cut-to-length and packaging for this product. Specify starting size, finished OD and diameter tolerance, length, surface roughness, straightness and inspection requirements separately. Actual capability depends on the material condition and geometry.
Related Grades and Product Alternatives
- d2 tool steel — evaluate grade differences before substitution
- o1 tool steel — evaluate grade differences before substitution
Frequently Asked Questions
Which material condition should I order?
Specify annealed machining condition or final hardness after treatment. Include the applicable purchasing standard, section size, certifications and target properties; heat-treatment schedules and mechanical values cannot be assumed across all conditions.
Can I substitute a similar grade?
A2’s hardening response and wear performance differ from D2 and oil-hardening O1. Obtain approval against the drawing and verify the ordered chemistry, mechanical properties, finishing response and documentation.
Request a Quote for A2 Air-Hardening Tool Steel
Send the grade, specifications, temper/condition, bar or tube dimensions, quantity and finish requirements to sales@mozaicprecision.com or call 847-637-8379. You can also request pricing online.