Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of x20cr13 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.
X20Cr13 Stainless Steel (1.4021 / AISI 420 Equivalent) is a widely used martensitic stainless steel known for its high strength, excellent hardenability, and reliable corrosion resistance in mildly aggressive environments. Thanks to its balanced chromium content and heat-treatable nature, X20Cr13 is frequently selected for industrial components, pump parts, shafts, valves, automotive elements, and precision-machined parts.
As a professional global metal supplier, we provide X20Cr13 in sheet, plate, coil, round bar, flat bar, forged blocks, pipe, tube, and customized machined parts-meeting strict international standards for B2B engineering and manufacturing projects.
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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
Grade: X20Cr13
Standard Equivalent: 1.4021 / AISI 420 / UNS S42000
Type: Martensitic Stainless Steel
Forms: Sheet, Plate, Coil, Round Bar, Flat Bar, Forged Bar, Pipe, Tube
Delivery Condition: Annealed / QT / Hardened & Tempered
Test Certificates: EN10204 3.1, ISO, SGS, TUV, Third-Party Inspection Available
Chemical Composition (Typical %)
| Element | Content (%) |
|---|---|
| C | 0.16–0.25 |
| Cr | 12.0–14.0 |
| Mn | ≤ 1.0 |
| Si | ≤ 1.0 |
| P | ≤ 0.04 |
| S | ≤ 0.03 |
| Fe | Balance |
Mechanical Properties
| Condition | Tensile Strength | Yield Strength | Hardness | Elongation |
|---|---|---|---|---|
| Annealed | 550–700 MPa | ~300 MPa | ≤ 220 HB | 15% |
| Quenched & Tempered | 750–950 MPa | 450–650 MPa | 220–260 HB | 10–14% |
| Hardened | Up to 52 HRC | - | - | - |
Available Specifications (Metric + Imperial)
| Product Type | Metric Sizes | Imperial Sizes | Wall/Thickness Range | Tolerances |
|---|---|---|---|---|
| Sheet / Plate | 0.3–100 mm | 0.012"–4" | ±0.01–0.8 mm | EN / ASTM |
| Round Bar | Ø 6–600 mm | Ø 0.25"–24" | - | h9 / h10 / h11 |
| Flat Bar | 10×3 – 300×50 mm | - | - | ±0.5 mm |
| Pipe / Tube (Welded & Seamless) | Ø 6–530 mm | Ø 0.25"–20" | SCH 5–XXS | ASTM A276 / A582 |
| Forged Blocks | Customized | Customized | Up to 3 tons | - |
Key Features & Benefits
✔ Excellent Hardenability
Achieves high hardness levels after heat treatment (up to 52 HRC).
✔ Balanced Corrosion Resistance
Performs well in water, mild acids, bases, and industrial atmospheres.
✔ Strong Wear & Abrasion Resistance
Suitable for high-friction and mechanical load components.
✔ Economical High-Strength Solution
Lower cost than high-alloy stainless steels while maintaining strong performance.
✔ Easy to machine (annealed condition)
Stable microstructure allows high-precision machining.
Products Applications
Pump shafts, motor shafts, turbine shafts
Cutlery, surgical tools, knives
Valve parts, seat rings, spindles
Automotive components
Springs and fasteners
Mechanical parts requiring hardening
Industrial instruments
Mold parts and wear-resistant components
Inspection & Quality Assurance
To guarantee consistent material performance, we apply a strict QA system:
100% PMI inspection for grade accuracy
Ultrasonic & Eddy Current Testing (UT/ET)
Dimensional checks based on EN/ASTM tolerances
Mechanical testing: tensile, hardness, impact
Corrosion testing upon request
Third-party certification: SGS, TUV, BV available
Full Material Traceability with heat numbers and MTC 3.1 reports
Looking for a reliable supplier of X20Cr13 (1.4021) Stainless Steel?
Our team supports global OEM, industrial projects, and long-term distribution partnerships.
Tell us your dimensions, tolerance requirements, and application-we will reply quickly with a competitive quote.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
1. What is the main difference between X20Cr13 and standard austenitic stainless steels like 304/316?
X20Cr13 is a martensitic stainless steel, meaning it is hardenable by heat treatment and offers much higher strength and wear resistance than 304/316.
However, its corrosion resistance is lower, making it more suitable for mechanical and structural components rather than highly corrosive environments.
2. Can X20Cr13 be hardened, and what hardness can it reach?
Yes. X20Cr13 is fully hardenable.
After quenching and tempering, hardness typically reaches 48–52 HRC, depending on specific heat-treatment parameters.
3. What heat treatment processes are commonly applied to X20Cr13?
Annealing: 740–840°C, slow cooling for improved machinability
Quenching: 980–1050°C, oil/air cooling
Tempering: 150–370°C to adjust hardness and toughness
Stress Relief: 650–750°C
These processes allow precise tuning of mechanical properties.
4. Is X20Cr13 suitable for marine environments?
Not recommended.
Its 12–14% Cr content offers moderate corrosion resistance only. For marine or chloride-rich environments, grades like 316L, 2205 duplex, or super duplex are more suitable.
5. What industries most commonly use X20Cr13?
Mechanical engineering
Pump & valve manufacturing
Automotive components
Industrial knives & cutting tools
Instrumentation
Energy equipment (shafts, rotors, wear parts)
6. Can you provide X20Cr13 with different delivery conditions (annealed, QT, hardened)?
Yes. Material can be supplied in:
Annealed (best for machining)
Quenched & Tempered (QT)
Hardened (maximum HRC)
Black surface / peeled / ground finish for bars
Pickled / bright annealed for tubes
7. What certifications and inspections are available?
We provide:
EN10204 3.1 / 3.2 MTC
PMI test
UT / ET NDT inspection
Hardness / tensile / impact test
Dimensional tolerance inspection
SGS | TUV | BV third-party inspection upon request
8. Do you offer cut-to-size or CNC machining for X20Cr13?
Yes. We support:
Laser / waterjet / plasma cutting
Turning, milling, grinding
Customized machined parts
Tight-tolerance precision components
9. Is X20Cr13 weldable?
It is weldable with caution.
Preheating (200–300°C) and post-weld annealing are recommended to avoid cracking due to martensitic transformation.
10. What forms of X20Cr13 can you supply?
We supply:
Sheet / plate / coil
Round bar / flat bar / square bar
Forged blocks
Seamless & welded pipes/tubes
Custom-machined components
Shafts & semi-finished products
11. What are typical tolerances for X20Cr13 bars and tubes?
Round Bars: h9/h10/h11
Cold Drawn Tubes: ±0.05–0.15 mm
Hot Rolled Tubes: as per EN / ASTM limits
Plates: ±0.02–0.8 mm depending on thickness
12. Can you support small MOQ orders?
Yes. For distributors, factories, OEM customers, and new project trials, we offer flexible MOQ, including small-quantity samples.
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