X20cr13 / 1.4021 Stainless Steel Round Bars
Certification: ISO, AISI, ASTM, GB, EN, DIN, JIS
Technique: Cold Rolled
Thickness: 2mm-300mm
Width:1000mm-2000mm
Length:as Your Requirements
Diameter Tolerance:H9, H11, H13, K9, K11, K13 etc
Sample:Free-Sample
Surface:Lack, Peeled, Polishing, Bright, Sand Blast,
Transport Package: Wooden Package
1.4021 stainless steel bar supplier
GNEE specializes in supplying high-performance X20Cr13/1.4021 martensitic stainless steel round bars, manufactured strictly according to EN 10088-3 standards, and can be customized for machinery, pumps, valves, and engineering applications. Our production process utilizes electric arc furnace melting + low-frequency refining + vacuum degassing to ensure uniform composition, minimal inclusions, and stable internal structure. The forging/rolling reduction ratio is ≥5:1, effectively eliminating porosity and cracks.
1.4021 Stainless Steel Bar Production Process
We offer 1.4021 stainless steel round bars with diameters ranging from φ5mm to φ600mm, available in both annealed (+A) and quenched and tempered (+QT700) finishes. Dimensional accuracy is strictly controlled: bright bars achieve h9/h11 tolerances, straightness ≤1.5mm/m, and surface finish supports centerless grinding and peeling, resulting in high concentricity.
Our Products
If you want to know more details and prices of the products, please contact us in time! Email: sales@gneestainless.com
Our 1.4021 stainless steel bars have a chromium content of 12.0% to 14.0%, tensile strength of 700 to 950 MPa, yield strength up to 600 MPa, and a hardness of up to 46 HRC after tempering. Compared to austenitic stainless steels, they offer superior machinability, moderate resistance to corrosion from fresh water, steam, and weakly alkaline media, and excellent wear resistance.
Each batch undergoes 100% ultrasonic testing according to EN 10228-3 standards and comes with a complete factory inspection certificate. GNEE guarantees consistent product quality and on-time delivery, and offers custom cutting services to fully meet the needs of shaft parts, valve assemblies, fasteners, and mechanical structural components.
What is the difference between QT700 and QT800 tempers?
They represent the strength grades of quenched and tempered (QT):
QT700: Yield strength ≥ 500 MPa; Tensile strength 700–850 MPa. (Higher ductility and impact resistance).
QT800: Yield strength ≥ 600 MPa; Tensile strength 800–950 MPa. (Higher hardness and wear resistance).
Is 1.4021 easy to machine?
In the annealed (+A) condition, its machinability is relatively good comparable to low-alloy carbon steels. In the hardened and tempered condition, it is more challenging but still manageable with high-quality carbide tools.
Specifications
| Country | Japan | Germany | USA | China | French |
| Standard | JIS | DIN | AISI | GB/T | NFA35-572 |
| Grade | SUS420J1 | X20Cr13/1.4021 | 420 | 2Cr13 | Z20Cr13 |
AISI 420 steel chemical composition
| Grade | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr |
| SUS420J1 | 0.16-0.25 | 1.0 | 1.0 | 0.04 | 0.03 | 12-14 |
| AISI420 | 0.15 Min | 1.0 | 1.0 | 0.04 | 0.03 | 12-14 |
| 1.4201 | 0.16-0.25 | 1.0 | 1.5 | 0.04 | 0.06 | 12-14 |
AISI 420 Alloy Steel Bar Specification
| Size | Round | Dia 0.1-500mm |
| Plate/Flat/Block | Thickness 0.3mm-200mm |
|
| Width 1mm-2500mm |
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| Heat treatment | Annealed ; Solid Solution | |
| Surface condition | Black; Peeled; Polished; Machined;Sand blast etc | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; C&F; etc.. | |
| Delivery time | 7-21 days | |
| Application | AISI420 stainless steels are used in Shear blades,needle valves, surgical equipment, cutlery | |
6: Delivery condition
For hot forged bar, usually the delivery condition is hot forged, annealed/solid solution, rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/solid solution, Black surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed/solid solution, black surface.
For cold drawn bar, usually the delivery condition is cold drawn, annealed/QT, peeled/black surface
Applications of X20Cr13/1.4021 Stainless Steel Bar
Engineering & Machinery: Used for shafts (pump, propeller, crankshafts), pistons, spindles, and gears in industrial equipment.
Cutlery & Blades: Widely applied in the production of high-quality knife blades, scissors, and other cutting tools.
Medical Instruments: Suitable for surgical tools and dental instruments requiring high hardness and polishing.
Fasteners: Commonly used in the manufacture of bolts, nuts, and studs, especially in tempered conditions.
If you have any project requirements for 1.4021 420 stainless steel bars, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from. For detailed chemical composition and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
Quality Inspection
Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc.
Metallographic Organization Comparison
| Source | Observation | Reason / Process | Result |
|---|---|---|---|
| Photo 1 (Domestic) | Carbides obviously large | - | Poor carbide morphology |
| Photo 2 (Abroad) | Carbide distribution uneven, some large | Smelting not well controlled; forging cannot compensate | Defects remain, uneven structure |
| Photo 3 (ZhengDa / Zeicin) | Carbides small and uniform | 1) EAF+LF+VD 2) RS ESR special smelting 3) Transformation forging | Much better than imported steel |
| Source | Observation | Result |
|---|---|---|
| Photo 1 (Domestic) | Carbides are large and may detach during processing | Poor machinability |
| Photo 2 (Abroad) | Smaller but angular, causing cracks and stress | Early failure |
| Photo 3 (ZhengDa / Zeicin) | Fine, uniform carbides from an improved process | Best performance |
Product Packaging
End Protection: Larger diameter round bars are fitted with plastic caps at the ends to prevent end-face impact and scratches to other bars.
Desiccant: An oxygen absorber/desiccant is placed inside the wooden crate or sealed packaging to absorb condensation inside the shipping container and prevent rust spots on the 1.4021 material.
Waterproof Paper: The packaging is lined with a polyethylene (PE) waterproof film or kraft paper.
Customer Feedback
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