2024-T4 vs. 2024-T351 MATERIAL
Q. What is the difference between 2024-T4 and 2024-T351? Our customer has asked for a 2024-T4 (rod) but I am having trouble finding the T4 material.Michael Markstrom
precision tool & die - Sioux Falls, South Dakota, United States
A. I believe this may be what you are looking for:
- Eastford, Connecticut, USA
A. Both have been solutionized at 920 F, water quenched and then naturally age hardened at room temperature for 4+ days. The difference: after quenching, the T351 rod was stress relieved by stretching 1-3% prior to aging. Thus, T351 is more stable for machining, as T4 still has residual stresses from quenching: compressive near the surface and tension in the center.
- Goleta, California
Finishing.com honored Ken for his countless carefully
A. T351 and T4 are temper designations of the aluminium alloy. T351 is a solution treated, cold worked and naturally aged and substantially stable condition. It is stress relieved by cold stretching to a permanent set of 1.5% to 3%.
Aerospace - Yeovil, Somerset, UK
A. Hi Michael,
T351 means "solution heat-treated, stress relieved through controlled stretching and naturally age hardened. The products are not straightened after stretching".
T4 means "solution heat-treated and naturally age hardened".
Now if your customer is asking for RODs in 2024 - T4 temper, then make sure that after extrusion the rods are solution heat-treated but no artificial age hardening treatment.
- Dubai, U.A.E.
my name is Marius, I am a student at an engineering Faculty from Romania.
For my final project I need some information about one heat treatment for AA 2024.
I want to ask you if it is a heat treatment for aa 2024, and after this heat treatment to obtain a minimum yield stress value of 350 MPa
- Buzau, Romania
April 21, 2008
Q. Hi, I'm a drafter in the automotive industry. I came across some of our older drawings this morning that specify Aluminum 2024-T3511. No one here knows the difference between T351 and T3511. Can someone help specify the main difference between the two? Thanks!Aaron Bizzell
Design drafting - Clover, South Carolina
January 31, 2011
A. The difference between t351 and t3511 is that t351 receives no further straightening after stretching and the t3511 receives minor straightening after stretching to comply with standard tolerances per machinist handbook.Curt Cantrell
- Fayetteville, Tennessee, USA
May 3, 2012
Do you know of any books that will have all this information? I.e. a book which will specify the differences between T3, T351, T3511, T4, T42, T6, T6511, etc -- not only for 2024, but 7075, 6061, etc.
- Langley, BC, Canada
June 5, 2018
Q. Dear all, can you help me, where can I find thickness tolerance (geometrical data) for 2024 T4? Thank you.Vasabi Suspent
- Munich, Germany
A. Hi Guillermo. The "T" series are 'thermally treated tempers'. The Aloca Aluminum Handbook explains it in the first few pages, then goes on to tabulate all sorts of data and properties for aluminum shapes. Good luck.
A. Hi Vasabi. The tolerances are going to depend on the shape, and they may or may not depend upon the alloy (depending on the shape). The Alcoa Aluminum Handbook has subchapters on tolerances for each of its sheets & plates, wrought products, extruded products, wire, etc.
Ted Mooney, P.E.
Pine Beach, New Jersey
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