About Our Steel
Pi Tape Texas, LLC offers a variety of steel and finish options designed to compliment every application. The following (listed below) are benefits to consider prior to making your purchase.
- 1095 Spring Steel is unquestionably the finest steel available for precision diameter tapes where thermal expansion and minimum stretch under normal operating tension ranges are a primary consideration. Pi Tape Texas, LLC has received spring steel tapes for recalibration service which were manufactured over 50 years ago and are still within our tolerance of 0.001". A light film coating of LPS3 oil is the only maintenance needed for these incredibly accurate instruments.
- Our 716 Stainless Steel, a specialty steel manufactured by Uddeholm, is utilized in more corrosive environments. Although stainless steel is a softer material with similar thermal expansion qualities as spring steel, it is used effectively in a multitude of industrial applications.
- Our Blue Easy to Read utilizes 1095 spring steel and is an extremely durable instrument, often utilized in low light environments or highly reflective conditions.
Physical Properties of Steel - Pi Tape Texas, LLC
| |
1095 Spring Steel |
716 Stainless Steel |
| Coefficient of Expansion
per inch per degree F. |
.0000065 |
.0000062 |
| Elongation % in inches |
7-10% |
7-12% |
| Hardness |
51 RC |
49-53 RC |
| Tensile Strength PSI |
259,600 |
248,000-277,000 |
| Yield Strength PSI |
235,690 |
210,000 |
The Relevant Criteria Regarding Thermal Qualities of Steel (Comparing coefficient of thermal expansion)
| |
Our spring steel: |
Other materials on the market: |
|
| |
.0000065” |
.0000092” |
Difference |
| 24” with 5ºf temp variable |
.0007” |
.0011” |
.0004” |
| 24” with 20ºf temp variable |
.0030” |
.0044” |
.0014” |
| 48” with 5ºf temp variable |
.0015” |
.0022” |
.0007” |
| 48” with 20ºf temp variable |
.0060” |
.0088” |
.0028” |