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Stainless Steel Rod: Medium Strength |
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In most architectural applications, TriPyramid's medium strength rods are the most cost-effective solution. These materials have yield strengths about three times that of normal annealed stainless steel, or A36 structural steel. This means a smaller diameter for a given strength. For instance, a 1/2" (12.7 mm) diameter annealed rod can be replaced by a 5/16" (8 mm) medium strength rod.
Two types of material are used for medium strength rod. In diameters less than 5/8" (16 mm) the material is cold drawn type 304 stainless steel. (Type 316 material is available for the most corrosive atmospheres.) These rods can be either cold headed or threaded.
For diameters greater than 5/8" (16 mm), a heat treatable stainless steel is used. These bars are typically threaded for fitting attachment because it is not economical to head these large heat-treated bars. |
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| Medium Strength Rod |
| Part Number |
Diameter |
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Breaking Strength |
Yield Strength |
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inch |
(mm) |
lbf |
(kN) |
lbf |
(kN) |
| A22-0188 |
0.188 |
(4.8) |
3,800 |
(16.9) |
3,000 |
(13.3) |
| A22-0225 |
0.225 |
(5.7) |
5,500 |
(24.5) |
4,400 |
(19.6) |
| A22-0250 |
0.250 |
(6.4) |
6,800 |
(30.2) |
5,400 |
(24.0) |
| A22-0330 |
0.330 |
(8.4) |
11,900 |
(52.9) |
9,400 |
(41.8) |
| A22-0375 |
0.375 |
(9.5) |
15,400 |
(68.4) |
12,100 |
(53.8) |
| A22-0437 |
0.437 |
(11.1) |
20,000 |
(89.0) |
16,500 |
(73.4) |
| A22-0500 |
0.500 |
(12.7) |
27,500 |
(122.3) |
21,600 |
(96.1) |
| A22-0625 |
0.625 |
(15.9) |
42,000 |
(186.8) |
33,000 |
(146.8) |
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| Medium Strength, Heat Treated Rod |
| Part Number |
Diameter |
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Thread |
Breaking Strength |
Yield Strength |
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inch |
(mm) |
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lbf |
(kN) |
lbf |
(kN) |
| A25-0750 |
0.750 |
(19.1) |
3/4-16 |
50,000 |
(222.4) |
39,000 |
(173.5) |
| A25-0875 |
0.875 |
(22.2) |
7/8-14 |
68,500 |
(304.7) |
53,500 |
(238.0) |
| A25-1000 |
1.000 |
(25.4) |
1-12 |
81,800 |
(363.9) |
63,600 |
(282.9) |
| A25-1125 |
1.125 |
(28.6) |
1 1/8-8 |
103,000 |
(458.2) |
80,000 |
(355.9) |
| A25-1250 |
1.250 |
(31.8) |
1 1/4-8 |
130,800 |
(581.8) |
101,700 |
(452.4) |
| A25-1375 |
1.375 |
(34.9) |
1 3/8-8 |
166,500 |
(740.6) |
129,500 |
(576.0) |
| A25-1500 |
1.500 |
(38.1) |
1 1/2-8 |
201,000 |
(894.1) |
156,500 |
(696.1) |
| A25-1750 |
1.750 |
(44.5) |
1 3/4-8 |
281,000 |
(1,250) |
218,500 |
(971.9) |
| A25-2000 |
2.000 |
(50.8) |
2-8 |
374,000 |
(1,664) |
290,900 |
(1,294) |
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| Young's modulus = 28, 500 ksi (196.5 MPa) |
| Strengths shown are in the reduced area of the threaded ends of the rods. |
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