1. Intro: The "Vanilla Ice Cream" of Steel
Hello, this is Global Steel Insight.
If you walk into any machine shop in the world—whether in Germany, the USA, or China—you will find this steel. It is S45C (JIS), also known as AISI 1045.
Why is it so popular? It is the "Vanilla Ice Cream" of the engineering world. It is not the strongest, nor the hardest, but it offers the perfect balance of Price, Strength, and Machinability.
2. What do you call it? (Global Names)
Steel names can be confusing. But for this grade, they are functionally identical. They all contain roughly 0.45% Carbon. That's why the number "45" is in every name.
▲ Color coding and Heat No. labeling are essential for quality control.
| Region | Standard Name | Key Chemical (C%) |
|---|---|---|
| JIS (Asia) | S45C | 0.42 ~ 0.48% |
| AISI (USA) | 1045 | 0.43 ~ 0.50% |
| DIN (EU) | C45 (1.0503) | 0.42 ~ 0.50% |
3. Why Engineers Love It (Pros & Cons)
- ✅ Cost: Very Affordable.
- ✅ Machinability: Cuts like butter. Saves tool life.
- ✅ Heat Treatment: Induction hardening works perfectly.
- ❌ Weldability: Poor. (Use SS400 for welding)
If you weld S45C without pre-heating, it will crack immediately due to high carbon content.
Solution: Pre-heat to 150°C ~ 200°C or use bolt assembly.
４. Expert Verdict: "The King of Shafts"
▲ We maintain 10,000+ tons of S45C stock for immediate global shipment.
For motor shafts, hydraulic cylinders, and guide pins, S45C is the undisputed champion. It is cheap, reliable, and available anywhere in the world.
🚀 Sourcing Engineering Steel
"Need S45C Round Bars with MTC?"
We supply verified materials and offer Peeling & Grinding services.
Direct Email: rongzhai69@gmail.com
Next Strategic Step ➤
👉 [Alloy #2] Why Did My Shaft Crack? (Heat Treatment)