High Strength Fair Workability 2017A T4 Aluminum Solid Round Bar
Machine Construction
2017A is a metal material of aluminum alloy and duralumin series,
mainly used in rivets, general mechanical parts, aircraft, ships,
transportation, building structures, etc.
It is the earliest application of duralumin, which is generally
called standard duralumin. It has medium strength. It has good
plasticity in annealed, freshly quenched and hot conditions. It can
be heat treated and strengthened. It can be used in quenched and
natural aging conditions. It has good spot weldability. , There is
a tendency to crack during gas welding and argon arc welding; the
aluminum-clad sheet has good corrosion stability. Machinability is
good in the quenched and aging state, but poor in the annealed
state.
The alloy element in 2017A is copper, which is the first 2-series
alloy to be industrially applied. It has high strength and good
cutting performance, but it has poor corrosion resistance. Mainly
used in rivets, general machinery parts, aircraft, ships,
transportation, building structures, transportation tool
structures, propeller components and accessories.
Aluminum 2017A Applications:
- Aerospace components
- Rivets
- General structural components
- Transportation
- Fasteners
- Screw machine products
- Gauges
- Pulleys
- Needles for knitting
Aluminum 2017A chemical composition that consists of:
| Chemical Composition Limits |
| Weight% | Al | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Others Each | Other Total |
| 2017 USA | Rem | 0.20-0.8 | 0.7 max | 3.5-4.5 | 0.40-1.0 | 0.40-0.8 | 0.10 max | 0.25 max | 0.15 max | 0.05 max | 0.15 max |
| Weight% | Al | Si | Fe | Cu | Mn | Mg | Cr | Zn | Zr + Ti | Others Each | Other Total |
| 2017A EAA | Rem | 0.20-0.8 | 0.7 max | 3.5-4.5 | 0.40-1.0 | 0.40-1.0 | 0.10 max | 0.25 max | 0.25 max | 0.05 max | 0.15 max |
2017A Typical Mechanical Properties
| Material | Condition | Tensile Strength (N/mm²) min | Yield Strength | Elongation in 4D % |
| ksi | Mpa | ksi | Mpa |
| 2017A | 2017A-T4 Bar | 55 | 379 | 32 | 221 | 12 |
Mechanical properties
Tensile strength σb(MPa): ≥370
Conditional yield strengthσ0.2(MPa): ≥215
Elongation δ5(%): ≥12
Sample size: bar diameter (diameter of square bar and hexagonal bar
inscribed circle)≤150
Note: 2017 aluminum bar room temperature longitudinal mechanical
properties
Heat treatment
1) Homogenization annealing: heating at 480～495℃; heat preservation
for 12～14h; furnace cooling.
2) Complete annealing: heating 390～430℃; holding time 30～120min;
air cooling.
3) Rapid annealing: heating 350～370℃; holding time 30～120min; air
cooling.
4) Quenching and aging: quenching at 495～510℃, water cooling;
artificial aging at 155～165℃, 6～10h, air cooling; natural aging:
room temperature 96h.
