MATERIAL INTRODUCTION
S45C Carbon Steel Strip
Medium carbon steel strip, magnetic, density: 7.85 g/cm³.
- Grade
- S45C
- Thickness
- 0.08–3.0 mm
- Width
- 2 mm
Chemical Composition (wt%)
| C | Si | Mn | P | S |
|---|---|---|---|---|
| 0.42～0.48 | 0.15～0.35 | 0.60～0.90 | ≤0.030 | ≤0.035 |
Applicable Standards
| Standard / Designation |
|---|
| JIS G4051 |
| GB/T 699 |
| ASTM A108 (1045) |
| EN 10083-2 (C45 / 1.0503) |
Tempers & Hardness
| Temper | Hardness / Characteristics |
|---|---|
| ANN (Annealed, Soft Temper) | HV ≤200, good ductility for bending and stamping |
| 1/4H | 210–240 HV |
| 1/2H | 240–280 HV |
| 3/4H | 280–320 HV |
| FH (Full Hard) | ≥320 HV |
(as-supplied)
Note: Hardenable by quenching & tempering, achievable HRC40～50 for high strength and wear resistance. Poor rust resistance, anti-corrosion coating (black oxide, phosphating, plating) is mandatory.
Common Surface Finishes
| Surface | Description / Applications |
|---|---|
| 2B cold rolled bright finish | clean surface, ideal for precision stamping |
| Pickled finish | low cost for general usage |
| Ground bright finish | for high-precision components |
Size Range & Precision Slitting (Edge trimming and deburring)
0.08–3.0 mmThickness
2 mmWidth
±0.002 mmTight tolerance available
Can be slit and precision cut per drawings. Please confirm required dimensions and achievable tolerances with your inquiry.
Material Features
- Medium carbon steel without Cr/Ni, low cost, excellent strength and wear resistance after heat treatment
- Very poor corrosion resistance, prone to rust in humid environment, surface protection required
- Good machinability; moderate weldability, cracking risk during welding
- Moderate work-hardening rate, balanced toughness after quenching, limited hardenability, suitable for thin gauge heat treatment
Applications
Precision shims, structural stamping parts, gear blanks, bushings, locating pins, springs, mold back plates, mechanical fasteners, automation fixture parts
Material Comparison
| Grade | Key Characteristics |
|---|---|
| S45C | Medium carbon steel, quench-temperable, good strength & wear resistance, poor rust resistance |
| 410 | Martensitic stainless, heat-treatable, better corrosion resistance than S45C |
| 420 | Martensitic stainless, higher quenched hardness, for cutting edges |
| 301 | Austenitic stainless, gains elasticity by cold rolling, no heat treatment hardening |