技術論文
Mechanical Test Comparisons Of Non-Airslip Vs. Airslip Casting
Non-Airslip Mechanical Tests
| Brinell Range |
Ultimate KPSI |
Yield KPSI |
Elongation % |
130-157 |
69 |
63 |
10 |
| Brinell Range |
Ultimate KPSI |
Yield KPSI |
Elongation % |
138-160 |
74 |
68 |
9 |
Required Minimums
| Brinell
Range |
Ultimate
KPSI |
Yield
KPSI |
Elongation
% |
130 |
65 |
56 |
6 |
2618 T61 Forgings
Mechanical Test Report For Direct Forge® Cast Material Used In Hot Forged Pistons
All test bars taken from the piston towers
NWAS Direct Forge® Material
| Test
ID |
Yield
Strength |
Tensile
Strength |
Elongation
% |
||
| Actual
Load Lbs. |
Lbs.
Per Sq. Inch |
Actual
Load Lbs. |
Lbs.
Per Sq. Inch |
||
1 |
2,661 |
53,800 |
3,235 |
65,400 |
13 |
2 |
2,607 |
53,100 |
3,184 |
64,800 |
11 |
3 |
2,745 |
55,500 |
3,260 |
65,900 |
12 |
4 |
2,782 |
56,200 |
3,244 |
65,500 |
10 |
2618 T61 Forged From Extruded Stock
| Test
ID |
Yield
Strength |
Tensile
Strength |
Elongation
% |
||
| Actual
Load Lbs. |
Lbs.
Per Sq. Inch |
Actual
Load Lbs. |
Lbs.
Per Sq. Inch |
||
1 |
2,398 |
48,700 |
3,145 |
64,100 |
12 |
2 |
2,517 |
50,800 |
3,140 |
63,400 |
12 |
3 |
2,517 |
51,800 |
3,060 |
63,000 |
10 |
4 |
2,496 |
50,800 |
3,055 |
62,200 |
11 |
5 |
2,579 |
52,500 |
3,170 |
64,600 |
10 |
Minimum
Requirements |
||
| Yield
Strength |
Tensile
Strength |
Elongation
% |
| 45,000 |
58,000 |
4 |
7075 Property Comparisons
Hot Forged Parts From Northwest Aluminum Specialties
Direct Forge® Cast Material vs. Extruded Forge Stock
| Source Alloy |
Forging
Temper |
Min. Req. Tensile KSI |
Actual
Tensile KSI |
Min.
Req. Yield KSI |
Actual
Yield KSI |
Min.
Req. Elongation % |
Actual
Elongation % |
| Extruded Stock
7075 |
T73 |
(66 longitudinal) (62 Transverse) |
73 Longitudinal |
(56 longitudinal) (53 Transverse) |
65 Longitudinal 64 Transverse |
(7) (3) |
8 8 |
| NWAS Direct Forge® 7075 |
T73 |
(66 longitudinal) (62 Transverse) |
77 Longitudinal |
(56 longitudinal) (53 Transverse) |
67 Longitudinal 67 Transverse |
(7) (3) |
9 9 |
| Extruded Stock
7075 |
T6 |
(75 longitudinal) (71 Transverse) |
80 Longitudinal |
(64 longitudinal) (61 Transverse) |
71 Longitudinal 69 Transverse |
(7) (3) |
7 7 |
| NWAS Direct Forge® 7075 |
T6 |
(75 longitudinal) (71 Transverse) |
86 Longitudinal |
(64 longitudinal) (61 Transverse) |
76 Longitudinal 77 Transverse |
(7) (3) |
13.5 13.5 |
