30cr13 / 3Cr13 Hot Rolled Stainless Steel Round Bar
Equivalent Grades：AISI 420, ASTM 420, JIS SUS420J1, EN 1.4021 (X20Cr13)
Standard：GB/T 1220, ASTM A276, ASTM A479, JIS G4303
Manufacturing Process：Hot Rolled
Diameter：10–350 mm (Stock), up to 600 mm
Length：3 m, 4 m, 5.8 m, 6 m, or Custom Length
Surface Finish：Black, Peeled, Turned, Ground, Bright
Heat Treatment Condition：Annealed (A), Quenched & Tempered (QT)
Hardness (Annealed)：≤229 HB (Typical)
Machining Service：Saw Cutting, CNC Machining, Turning, Drilling, Milling, Threading
Packing：Bundles with Steel Straps, Waterproof Packing, Wooden Cases or Pallets
MOQ：1 Ton
Delivery Time：7–15 Days (Stock Sizes)
30cr13 / 3Cr13 Hot Rolled Round Bar Export Record
Export 30Cr13 / 3Cr13 Hot Rolled Stainless Steel Round Bar, Diameter 45mm, Length 6000mm, Total in 12500KGS.
Export 3Cr13 Hot Rolled Stainless Steel Round Bar, Diameter 80mm, Total in 8600KGS.
Export 30Cr13 Hot Rolled Stainless Steel Round Bars, Diameter 120mm, Length 5800mm, Total in 35000KGS.
Export 3Cr13 Hot Rolled Stainless Steel Round Bar, Diameter 65mm, Length 4000mm, Total 520Pcs.
Products Description
GNEE Stainless supplies hot-rolled 30Cr13 / 3Cr13 stainless steel round bars with diameters ranging from 10 mm to 350 mm (larger sizes available upon request). We offer various delivery conditions, including annealed, quenched, and tempered, to satisfy diverse engineering requirements. Our comprehensive value-added processing services：including cut-to-length sawing, CNC turning, milling, drilling, centerless grinding, peeling, polishing, and custom heat treatment ensure that customers receive production-ready semi-finished or finished components directly.
Our Products
If you want to know more details and prices of the products, please contact us in time! Email: sales@gneestainless.com
The hot-rolled 3Cr13 stainless steel bars we supply feature a carbon content of 0.26–0.35% and a chromium content of 12.0–14.0%. Following quenching and tempering (Q&T), the microstructure transforms into martensite, yielding a strength significantly higher than that of austenitic stainless steels such as 304 or 316.
After solution treatment and quenching at 980–1050°C, followed by tempering tailored to specific application requirements, the material typically achieves a hardness of HRC 48–52. When using heat treatment processes optimized for wear-resistant components, a hardness of HRC 52–55 can be achieved, maintaining uniform performance even across large cross-sectional dimensions.
In the annealed condition, the material exhibits a minimum tensile strength of 540 MPa, a yield strength of 225 MPa, and an elongation of 18%. This makes it an ideal material for industrial cutting tools, surgical instruments, valve stems, pump shafts, molds, bearings, and highly wear-resistant mechanical components.
Applications of 3Cr13 Stainless Steel Round Bar
Industrial tools, springs, and cutting components operating at temperatures below 300°C
Shafts, bolts, nozzles, valve seats, and bearing components operating at temperatures below 400°C
Corrosion-resistant plastic molds and blanks for medical surgical instruments
High-load structural components for general industrial use and mildly corrosive environments
Specifications
Chemical composition of 3Cr13 round bar (%)
| C | Si | Mn | P | S | Cr | |
| 420 |
≤0.15 |
≤1.00 |
≤1.00 |
≤0.040 |
≤0.030 |
12.00-14.00 |
| 2Cr13 |
0.16-0.25 |
≤1.00 |
≤1.00 |
≤0.040 |
≤0.030 |
12.00-14.00 |
| 3Cr13 |
0.26-0.35 |
≤1.00 |
≤1.00 |
≤0.040 |
≤0.030 |
12.00-14.00 |
Mechanical properties of 3Cr13 stainless steel bars
| Tempering Temperature | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX |
| Annealed | 655 | 345 | 25 | 214 max |
| 399°F(204°C) | 1600 | 1360 | 12 | 444 |
| 600°F(316°C) | 1580 | 1365 | 14 | 444 |
| 800°F(427°C) | 1620 | 1420 | 10 | 461 |
| 1000°F(538°C) | 1305 | 1095 | 15 | 375 |
| 1099°F(593°C) | 1035 | 810 | 18 | 302 |
| 1202°F(650°C) | 895 | 680 | 20 | 262 |
What is the equivalent of 30Cr13?
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX |
| 2Cr13/20Cr13 | 640 | 440 | 20 | 223 |
| 3Cr13/30Cr13 | 735 | 540 | 12 | 235 |
What is the hardness of 30Cr13 after heat treatment?
30Cr13 is designed to be hardened through quenching and tempering.
After Quenching (typically at 1000°C–1050°C), the hardness can reach 50-54 HRC.
After Tempering, the hardness can be adjusted based on the required balance between toughness and strength, typically used in the range of 30-45 HRC for mechanical parts.
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 cold drawn bar, usually the delivery condition is cold drawn, annealed/QT, peeled/black surface
If you have any project requirements for 30Cr13 3Cr13 420J2 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
Each shipment is accompanied by a Mill Test Certificate (MTC) compliant with EN 10204 3.1, covering heat number traceability, chemical composition, mechanical properties, and dimensional inspection data. Additionally, optional services such as PMI (Positive Material Identification), Ultrasonic Testing (UT), hardness testing, and third-party inspections by SGS, BV, or TÜV are available to ensure compliance with international quality standards and rigorous industrial project requirements.
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 30Cr13 material.
Waterproof Paper: The packaging is lined with a polyethylene (PE) waterproof film or kraft paper.
FAQ
Does 30Cr13 have good corrosion resistance?
As a martensitic stainless steel, it has moderate corrosion resistance. It is resistant to fresh water, steam, and mild atmospheric conditions. However, it is not as corrosion-resistant as austenitic grades like 304 or 316. Its corrosion resistance is at its best when the surface is polished and the material is in the hardened and tempered state.
Is 30Cr13 good for knives?
30Cr13 (also known as 3Cr13 or X30Cr13) is a budget-friendly martensitic stainless steel widely used for entry-level kitchen and utility knives. While it will not hold an edge like a premium blade, it is highly corrosion-resistant, extremely easy to sharpen, and highly resistant to chipping.
What is the difference between 30Cr13 and 3Cr13?
There is no difference between 30Cr13 and 3Cr13. They refer to the exact same grade of martensitic stainless steel, but represent different generations of Chinese naming standards: 3Cr13 is the old designation, and 30Cr13 is the newer national standard.
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