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Comparative Characteristics
| (1) |
Rating S through E are relative ratings in decreasing order of merit, based on exposures to sdium chloride solution by intermittent spraying or immersion. Alloys with A and B ratings can be used in industrial and seacoast atmospheres without protection. Alloy with C, D, and E ratings generally be protected at least on faying surfaces. |
| (2) |
Stress-corrosion cracking rating are based on service experience and on laboratory tests of specimens exposed to the 3.5% sodium chloride alternate immersion teet. |
| |
A = No known instance of failure in service or in laboratory tests.
B = No known instance of failure in service; limited failures in laboratory tests of shot transverse specimens.
C = Service failures with sustained tension stress acting in shot transverse direction relative to grain structture; Limited failures in laboratory tests of long transverse specimens.
D = Limited service failures with sustained longitudinal or long transverse areas. |
| (3) |
In relatively thick sections the rating would be E |
| (4) |
This rating may be different for material held at elevated temperature for long periods. |
| (5) |
Ratings A through D for Workability (cold), and A through E for Machinability, are relative ratings in decreasing order of merit. |
| (6) |
Ratings A through D for Weldability and Brazeability are relative ratings defined as follows:
A = Generally weldable by all commercial procedures and methods.
B = Weldable with special techniques or for specific applications that justify preliminary trials or testing to develop welding procedure and weld performance.
C = Limited weldability because os ckack sensitivity or loss on resistance to corrosion and mechanical properties.
D = No commonly used welding metjods have been developed. |
| (7) |
T74 type tempers, although not previously registered, have appeared in various literature |
Comparative Characteristics and Applications*
ALLOY
&
TEMPER |
RESISTENCE
TO
CORROSION |
Worka- bility
(Cold) (5) |
Machi- nability(5) |
Braza- bility(6) |
WELDABILITY |
APPLICATIONS OF
ALLOY |
| General (1) |
Stress-
Corrosion
Cracking(2) |
Gas |
Arc |
Resistance
Spot and
Seam |
| 2111- |
T3 |
D(3) |
D |
C |
A |
D |
D |
D |
D |
Screw machine products |
| |
T4, T451 |
D(3) |
D |
B |
A |
D |
D |
D |
D |
| |
T8 |
D |
B |
D |
A |
D |
D |
D |
D |
| 2017- |
T4, T451 |
D(3) |
C |
C |
B |
D |
D |
B |
B |
Screw machine products, fittings |
| 2024- |
O |
- |
- |
- |
D |
D |
D |
D |
D |
Truc Whels, screw machine products, aircraft structures |
| |
T4, T3, T351, T3510, T3511 |
D(3) |
C |
C |
B |
D |
C |
B |
B |
| |
T361 |
D(3) |
C |
D |
B |
D |
D |
C |
B |
| |
T6 |
D |
B |
C |
B |
D |
D |
C |
B |
| |
T861, T81, T851, T8510, T8511 |
D |
B |
D |
B |
D |
D |
C |
B |
| |
T72 |
- |
- |
- |
B |
D |
D |
C |
B |
| 3003- |
O |
A |
A |
A |
E |
A |
A |
A |
B |
Cooking untensils, chemical equipment, pressure vessels, sheet metal work, builder's hardware, storage tanks |
| |
H12 |
A |
A |
A |
E |
A |
A |
A |
A |
| |
H14 |
A |
A |
B |
D |
A |
A |
A |
A |
| |
H16 |
A |
A |
C |
D |
A |
A |
A |
A |
| |
H18 |
A |
A |
C |
D |
A |
A |
A |
A |
| |
H25 |
A |
A |
B |
D |
A |
A |
A |
A |
| 5052- |
O |
A |
A |
A |
D |
C |
A |
A |
B |
Shet metal work, hydraulic tube, appliances |
| |
H32 |
A |
A |
B |
D |
C |
A |
A |
A |
| |
H34 |
A |
A |
B |
C |
C |
A |
A |
A |
| |
H36 |
A |
A |
C |
C |
C |
A |
A |
A |
| |
H38A |
A |
A |
C |
C |
C |
A |
A |
A |
| 5083- |
O |
A(4) |
A(4) |
B |
D |
D |
C |
A |
B |
Unfired, welded pressure vessels, marine, auto aircraft cryogenics, TV towers, drilling rigs, transportation equipment, missile components |
| |
H32, H116 |
A(4) |
A(4) |
C |
D |
D |
C |
A |
A |
| |
H111 |
A(4) |
B(4) |
C |
D |
D |
C |
A |
A |
| 5086- |
O |
A(4) |
A(4) |
A |
D |
D |
C |
A |
B |
| |
H32, h116 |
A(4) |
A(4) |
B |
D |
D |
C |
A |
A |
| |
H34 |
A(4) |
B(4) |
B |
C |
D |
C |
A |
A |
| |
H36 |
A(4) |
B(4) |
C |
C |
D |
C |
A |
A |
| |
H38 |
A(4) |
B(4) |
C |
C |
D |
C |
A |
A |
| |
H111 |
A(4) |
A(4) |
B |
D |
D |
C |
A |
A |
| 6061- |
O |
B |
A |
A |
D |
A |
A |
A |
B |
Heavy-duty srtuctures requring good corrosion resistance, truck and marine, railroad cars, furniture, pipelines |
| |
T4, T451, T4510, T4511 |
B |
B |
B |
C |
A |
A |
A |
A |
| |
T6, T651, T651, T6510, T6511 |
B |
A |
C |
C |
A |
A |
A |
A |
| 6063- |
T1 |
A |
A |
B |
D |
A |
A |
A |
A |
Pipe railing, furniture, architectural extrusions |
| |
T4 |
A |
A |
B |
D |
A |
A |
A |
A |
| |
T5, T52 |
A |
A |
B |
C |
A |
A |
A |
A |
| |
T6 |
A |
A |
C |
C |
A |
A |
A |
A |
| |
T83, T831, T832 |
A |
A |
C |
C |
A |
A |
A |
A |
| 6262- |
T6, T651, T6510, T6511 |
B |
A |
C |
B |
B |
B |
B |
A |
Screw machine products |
| |
T9 |
B |
A |
D |
B |
B |
B |
B |
A |
| 7075- |
O |
- |
- |
- |
D |
D |
D |
D |
B |
Aircraft and other structures |
| |
T6, T651, T652, T6510, T6511 |
C(3) |
C |
D |
B |
D |
D |
D |
B |
| |
T73, T751 |
C |
B |
D |
B |
D |
D |
D |
B |
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