8630 Alloy Steel
As a leading 8630 AISI alloy steel supplier, Pennsylvania Steel Corporation offers more than conventional options. Our proprietary FLEXOR® alloy is engineered to outperform standard 8630 steel in key areas like strength, wear resistance, and dimensional consistency, making it the ideal choice for manufacturers and engineers in demanding industries.
Whether you're machining workholding components, forming dies, or fabricating oilfield tools, FLEXOR® provides the high-performance solution you need. It’s a dependable 8630 alloy steel alternative designed for enhanced results in critical applications across aerospace, firearms, automotive, and more.
| Alloy | 8630 | FLEXOR® |
|---|---|---|
| Carbon, C | .28-.33 | .32-.36 |
|
Manganese, Mn |
.65-.95 | .60-.80 |
|
Phosphorous, P |
.035(max) | .025(max) |
|
Sulfur, S |
.04(max) | .025(max) |
|
Silicon, Si |
.15-.30 | .15-.30 |
|
Chromium, Cr |
.40-.60 | .75-1.00 |
|
Molybdenum, Mo |
.15-.25 | .40-.60 |
|
Tungsten, W |
- | .40-.70 |
SAE 8630 Steel Chemistry Composition vs. FLEXOR®
AISI 8630 is valued for its versatility in structural and mechanical parts, but FLEXOR® builds on that foundation with an advanced alloy profile. FLEXOR® features increased levels of molybdenum and carbon, tighter controls on impurities like sulfur and phosphorus, and the strategic addition of tungsten for enhanced high-temperature performance and wear resistance.
These enhancements give FLEXOR®:
- Improved hardenability and core strength in larger cross-sections
- Greater resistance to fatigue and thermal cycling
- A cleaner grain structure for more predictable performance in machining and heat treatment
With this combination of properties, FLEXOR® surpasses SAE 8630 steel in many key categories while offering greater flexibility in demanding fabrication environments.
High-Strength Performance with Long-Term Reliability
FLEXOR® was developed to meet the growing demand for materials that offer both strength and stability in mission-critical systems. Compared to standard 8630 steel, FLEXOR® consistently achieves higher mechanical values while minimizing distortion and failure risk.
Typical performance enhancements include:
- Tensile Strength: Up to 225 ksi, compared to 125–150 ksi for heat-treated 8630
- Yield Strength: Up to 205 ksi
- Hardness Uniformity: Reliable through-section performance
- Fatigue Resistance: Superior for applications exposed to vibration and cyclic loads
From automotive axles to aerospace brackets and firearm receivers, FLEXOR® delivers strength where it matters—without compromising ductility or machinability.
Precision Machinability That Supports Production Efficiency
Materials that save time and extend tool life make a measurable impact on productivity. FLEXOR® offers a clear advantage over 8630 alloy steel in machining thanks to its cleaner chemistry and refined grain structure. These qualities result in better chip control, smoother surface finishes, and reduced tool wear, especially during high-volume or precision CNC operations.
FLEXOR® machinability benefits:
- Faster material removal rates with less wear on tooling
- Reduced downtime between operations
- Lower total cost of production
- Consistently tight tolerances with minimal secondary processing
Fabricators and OEMs in industries like metal forming, workholding, and firearms manufacturing count on FLEXOR® to streamline operations while improving finished part quality.
Contact Pennsylvania Steel Corporation today to learn more about FLEXOR® and its advantages over 8630 alloy steel.
Connect with a FLEXOR® Specialist Today
If you're searching for a 8630 AISI alloy steel supplier that can deliver higher value and better performance, FLEXOR® from Pennsylvania Steel is the solution. Backed by decades of experience and a nationwide distribution network, we provide next-day delivery on a wide range of FLEXOR® forms and conditions—from hot-rolled bar and forged billet to ground and polished stock.
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."