Opens in a new tab
Verified Steelworking Supplier
Verified Steelworking Supplier
Material Shapes
Related Articles
Sourcing Request

65Mn Spring Steel Bar

65Mn spring steel bar is a common Chinese grade used for spring parts and selected wear-resistant components. It can be a practical option where the design calls for 65Mn and material cost is an important consideration.

The supplied condition affects how easily the stock can be machined or formed. Final spring performance normally depends on later heat treatment. Surface scratches and sharp machining marks deserve attention on parts that will flex repeatedly, as they can become starting points for cracks.

At Dexter Steel, we review whether the order is for material to form, machine or heat treat. Cut blanks and specified processing can reduce workshop work. The required condition should be clear rather than treating every 65Mn bar as ready for spring service.

Request A Quote

More Details

Control the Cost of Each Blank

For 65Mn parts made in quantity, excess width or thickness adds cost to every piece. We have full range of available stock sizes, closer sizes to the final components can reduce scrap and machining.

Dexter Steel can quote full bars or cut blanks. For flat parts, send the required width, thickness and length. Identify which faces will be machined so the allowance is clear.

The supplied hardness should suit the work in your shop. Softer stock may be needed where the part will be bent or heavily machined before hardening.

Holes, Slots and Worked Edges

We can review drilling and slotting from your drawing. These operations are usually easier before final hardening.

For parts that flex repeatedly, the drawing should show:

  • Hole and slot positions.
  • Required corner radii.
  • Burr removal and edge finishing.

Sharp marks at a worked edge can shorten spring life. These details are worth defining even on a simple part.

If the assembly includes welding, tell us before ordering. 65Mn needs a separate welding review.