Aluminium ENAW-AlSi1MgMn Bar & Rod(EU EN, DIN, WNR)

Product Description

By specifying EN AW-AlSi1MgMn, you are targeting the exact chemical designation for EN AW-6082. Under European standardization, this specific string explicitly outlines the primary metallurgical drivers of the alloy: Silicon (Si) at roughly 1% for precipitation hardening, balanced with Magnesium (Mg) and Manganese (Mn).

When ordering bar and rod stock under this specific designation descriptor, the technical requirements fall squarely under the EN 755 (extruded) or EN 754 (cold drawn) framework.

1. Standard Identifiers & Cross-Reference

If your bill of materials or European drawing specifies the chemical name, it maps directly to these international designations:

• Standard Designation: EN AW-AlSi1MgMn

• Numerical Code: EN AW-6082

• WNr (Werkstoffnummer): 3.2315

• Old DIN 1725-1 Baseline: AlMgSi1Mn (often historically listed as DIN 3.2315)

• UK (BS): HE30

• ISO Reference: Al-Si1MgMn

2. Chemical Composition Breakdown

The precise element windows specified by European standards dictate a rigid balance to guarantee structural consistency, specifically keeping the Silicon level slightly higher than Magnesium to force an "excess silicon" matrix that enhances thermal treatment response.

3. Standard Delivery Conditions & Dimensions (EN 755)

When procurement requests are made for EN AW-AlSi1MgMn bar stock, the mechanical properties are tightly bounded by processing methods and dimensions.

Extruded vs. Cold Drawn

• EN 755-2 (Extruded): Most common. It has slightly lower surface brightness but excellent structural integrity.

• EN 754-2 (Cold Drawn): Drawn through a die after extrusion. It features much tighter dimensional tolerances, improved surface quality, and slightly higher tensile properties due to cold work tracking.

Typical Mechanical Minimums (Extruded Bars - T6 Temper)

Values depend strictly on cross-sectional thickness or diameter ($D$):

• $D \le 20\text{ mm}$: $R_m \ge 295\text{ MPa}$ | $R_{p0.2} \ge 250\text{ MPa}$ | Elongation $A \ge 8\%$

• $20 < D \le 150\text{ mm}$: $R_m \ge 310\text{ MPa}$ | $R_{p0.2} \ge 260\text{ MPa}$ | Elongation $A \ge 10\%$

• $150 < D \le 200\text{ mm}$: $R_m \ge 280\text{ MPa}$ | $R_{p0.2} \ge 240\text{ MPa}$ | Elongation $A \ge 10\%$

4. Engineering Fabrication Notes

Machining Optimization: The manganese content ensures that the alloy chips cleanly during high-speed turning. If you are running automated CNC swiss-lathes or screw machines, specifying cold-drawn (EN 754) stock ensures superior concentricity and straightness tolerances, protecting your guide bushings from premature wear.

• Anodizing Response: It can be technical-anodized or hard-coated for wear resistance perfectly. However, due to the manganese and silicon content, the clear architectural anodizing finish will appear slightly greyish or dark compared to a pure 6063 alloy.

• Welding Profiles: Highly compatible with 5356 or 4043 filler alloys. If designing structural elements, remember to factor a 50% reduction in design yield strength along the localized Heat-Affected Zone (HAZ) unless a complete post-weld solution heat treatment and aging cycle can be performed.