Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of x20crs13 in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
X20CrS13 stainless steel is a sulfur-enhanced martensitic stainless steel designed for superior machinability, high hardness after heat treatment, and reliable corrosion resistance in mildly aggressive environments. This grade-often referred to as free-machining 20Cr13 stainless steel-is widely used for precision components, automotive parts, shafts, and fasteners where efficient machining and consistent mechanical strength are required.
X20CrS13 is an ideal material solution for global B2B buyers seeking stable quality, tight dimensional tolerances, and competitive pricing.
Keywords: X20CrS13, 1.4021MOD, EN 20Cr13S, Martensitic Stainless Steel, Free-Cutting Stainless Steel Bar, Sulfur Alloy Steel
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
Products Description
X20CrS13 is a modified version of X20Cr13 with increased sulfur content to improve cutting efficiency. Its excellent machinability reduces tool wear and shortens production cycles. After quenching and tempering, it achieves high strength and moderate corrosion resistance-ideal for mass-production of mechanical components.
Chemical Composition (Typical Values, %)
| Element | Content (%) |
|---|---|
| C | 0.16 – 0.25 |
| Si | ≤ 1.00 |
| Mn | ≤ 1.50 |
| P | ≤ 0.040 |
| S | 0.15 – 0.35 (enhanced machinability) |
| Cr | 12.0 – 14.0 |
| Ni | ≤ 0.60 |
| Fe | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 700 – 900 MPa |
| Yield Strength (Rp0.2) | ≥ 450 MPa |
| Hardness | 200 – 240 HB |
| Elongation | ≥ 10% |
Available Specifications (Metric + Imperial, Complete Table)
| Product Form | Metric (mm) | Imperial (inch) | Tolerances |
|---|---|---|---|
| Round Bar | Ø 6–300 mm | Ø 0.24"–12" | h9 / h10 / h11 |
| Square Bar | 6×6 – 200×200 | 0.24"×0.24" – 8"×8" | ±0.05–0.5 mm |
| Flat Bar | T 3–60 mm, W 20–600 mm | T 0.12"–2.36", W 0.8"–24" | EN / ASTM tolerances |
| Hot Rolled Plate | 3–100 mm | 0.12"–4" | Standard mill tolerance |
| Forged Block | 100–600 mm | 4"–24" | On request |
Features & Advantages
✔ Improved machinability due to sulfur addition
✔ High hardness after heat treatment
✔ Stable cutting performance for CNC machining
✔ Good dimensional stability
✔ Suitable for high-volume production
✔ Moderate corrosion resistance in mild environments
✔ Excellent cost-performance ratio
Typical Applications
Automotive machined components
Pump parts & valve parts
Fasteners & bolts
Shafts & pins
Knife parts
Measuring instruments
General mechanical components requiring frequent machining
Inspection & Quality Assurance
Full mill test certificates (EN 10204 3.1 / 3.2)
Mechanical property testing (UTS, YS, hardness)
Chemical analysis by spectrometer
Ultrasonic testing (UT) per EN / ASTM
Dimensional tolerance inspection for every batch
Third-party inspection available: SGS / TUV / BV
Ready to source X20CrS13 stainless steel with stable quality and fast delivery?
Our technical team will support drawings, customization, and global logistics.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
1. Is X20CrS13 equivalent to X20Cr13?
Not exactly. X20CrS13 contains higher sulfur (S 0.15–0.35%) to improve machinability, while X20Cr13 has low sulfur.
2. Is it magnetic?
Yes. As a martensitic stainless steel, it is fully magnetic.
3. Can X20CrS13 be hardened?
Yes. It reaches high hardness after quenching and tempering.
4. What heat treatment do you recommend?
Quench at 950–1050°C + temper at 200–300°C, depending on desired hardness.
5. Does sulfur reduce corrosion resistance?
Yes, slightly. It improves machinability but decreases corrosion resistance compared with standard 20Cr13.
6. What are common surface finishes?
Black, peeled, bright bar, polished bar, and centerless ground bar.
7. Do you offer customized lengths?
Yes, fixed length, cut-to-length, and precision machining services are available.
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