4140 Alloy Steel
Pennsylvania Steel Corporation presents an alternative to SAE 4140 alloy steel.
FLEXOR®'s chemistry and mechanical properties are comparable, if not superior to 4140 alloy steel and thus, can be utilized in most of the same applications.
Being a proprietary grade Pennsylvania Steel ensures that all FLEXOR® heats meet the high quality vacuum degas electric arc furnace melt process in order to ensure cleanliness, grain refinement and maximum reductions.
FLEXOR® 4140 Alloy Steel Applications
- Automotive
- Oil and Gas Drilling
- Forging
- Warm and Cold Forming
- Performance Racing
- Powdered Metal
- Die Casting
- Machine Building
- Tool Making
- Work-holding
- Transfer Systems
4140 Alloy Steel Chemistry Composition
| Alloy | 4140 | FLEXOR® |
|---|---|---|
| Carbon, C | .38-.43 | .32-.36 |
|
Manganese, Mn |
.75-1.00 | .60-.80 |
|
Phosphorous, P |
.035(max) | .025(max) |
|
Sulfur, S |
.04(max) | .025(max) |
|
Silicon, Si |
.15-.35 | .15-.30 |
|
Chromium, Cr |
.80-1.10 | .75-1.00 |
|
Molybdenum, Mo |
.15-.25 | .40-.60 |
|
Tungsten, W |
- | .40-.70 |
Density
| 4140 | FLEXOR® |
|---|---|
| (x1000 kg/m3) 7.7 - 8.03 @25°C | 7.543g/cm3 per ASTM B311 |
Specific Heat
| 4140 | FLEXOR® |
|---|---|
| (J/kg-K) 473 @150 - 200°C | .16 Btu/lb/°F |
The limitations and inferiority of 4140 alloy steel can be frustrating and jeopardize the success of your project or application.
Typical FLEXOR® Mechanical Properties (Based upon 1.00" dia.)
| Mechanical Properties | 30 HRC | 40 HRC | 45 HRC |
|---|---|---|---|
| UTS(ksi) Per ASTM E8-04 | 147 | 183 | 225 |
| YS 0.2% offset Per ASTM E8-04 | 134 | 171 | 205 |
| V-Notch Charpy Impact Per ASTM E23-06 | 80 | 45 | 21 |
| RA% Per ASTM E8-04 | 64 | 60 | 50 |
| Elongation Per ASTME E8-04 | 21 | 18 | 12 |
| Poisson's Ratio per ASTM E111-04 | .282 | ||
| Young's Modulus per ASTM E111 | 30900 (ksi) |
Contact Pennsylvania Steel Corporation today to learn more about FLEXOR® and its advantages over 4140 alloy steel.
FLEXOR® Properties
FLEXOR®'s consistent quality and versatility in heat treatment allows for a wide range of physical properties that are more appealing than those of typical ASTM, AISI or SAE 4140 alloy steel.
Higher core hardness typically means a more uniform hardness through any cross section. The more uniform the hardness along with a fine grain microstructure yields a higher fatigue and tensile strength for difficult applications. Please compare total percentage of Alloy above.
FLEXOR® Sizes & Conditions
FLEXOR® steel is available in a variety of sizes and conditions. These include, but are not limited to:
- Decarb free alloys
- Hot rolled flats
- Hot rolled rounds
- Hot rolled plates
- Peeled steel bars
- Turned forged rounds and billet
- Ground and polished rounds
Testimonials
"At Powerhold we use FLEXOR® exclusively on all our special design work-holding Diaphragms. The performance and machining quality of FLEXOR® is superior to anything we have utilized in the past.
Today’s customer demands a quality product that performs consistently...FLEXOR® enables us to meet that goal every day."
Testimonials
"Just wanted to take a minute to say thanks. I always receive my orders on time and without any complications. I appreciate you keeping me so up to date on the order process through email, and the way the steel is cut and packaged so carefully. Using your Product (FLEXOR®) has increased standard tool life by as much as 25%-30%. Thank you again for all you hard work. I look forward to business with you again and again, it's always a pleasure!"
Testimonials
"Pennyslvania Steel Corporation has been a valued supplier for our company going on two decades. FLEXOR®'S versatility and reliability have been extremely helpful to the products we manufacture. Due to to FLEXOR®'S versatility at various hardness' we are able to use it at 28-32 HRC, 28-32 HRC and nitrided, or through hardened anywhere between 42 and 50 HRC. In our experience FLEXOR® has superior machinability to other comparable steel grades especially in higher hardness'. We machine FLEXOR® at 40 HRC and find this to be a key benefit to our manufacturing process."