420 Stainless Steel Round Bar
420 stainless steel round steel bar is a martensitic type stainless steel, belongs to the high carbon grade, in the hardening conditions, good resistance to the atmosphere, with a certain degree of abrasion resistance and corrosion resistance, hardness and other characteristics, suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, meters, transport tools, household appliances, and food tableware, stainless steel hospital equipment.
420 stainless round bar chemical composition
| Grade | C | Mn | Si | P | S | Cr | Ni |
|---|---|---|---|---|---|---|---|
| 420 | 0.15 max |
1.00 max |
1.00 max |
0.04 max |
0.03 max |
min: 12.0 max: 14.0 |
- |
420 stainless round stock mechanical property
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) |
Elongation (% in 50mm) |
Hardness Brinell (HB) |
|---|---|---|---|---|
| Annealed * | 655 | 345 | 25 | 241 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 |
| * Annealed tensile properties are typical for Condition A of ASTM A276; annealed hardness is the specified maximum. | ||||
Characteristics of 420 stainless steel round rod
420 stainless steel is a common stainless steel material whose main components are chromium and carbon. It has many unique features that make it widely used in various fields.
Firstly, 420 stainless steel has excellent corrosion resistance. Due to its high chromium content, it can form a dense protective film of chromium oxide, which effectively prevents the metal surface from oxidation and corrosion. Therefore, in a humid, acidic or alkaline environment, 420 stainless steel can still maintain good performance.
Secondly, 420 stainless steel has good mechanical properties. It has high strength and hardness, and can withstand greater pressure and impact.
In addition, 420 stainless steel has good heat treatment properties. By adjusting the heat treatment process, its organisational structure and mechanical properties can be changed to meet the needs of different applications.
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