Production Range：
● 0.5MM-82.55MM
Production Grade:
● G5-G200
Applications：
● Medical devices ● Automotive Components
● Aerospace Components ● Stainless Steel Bearing
● Valves
440 stainless steel is a high-quality, high-carbon martensitic stainless steel that exhibits excellent corrosion resistance, hardness, and wear resistance. With proper heat treatment, its hardness can reach 58 to 60 HRC. Furthermore, due to its high chromium content, 440 stainless steel demonstrates remarkable corrosion resistance, resisting erosion from water vapor, carbon monoxide, and most organic and inorganic acids.
EDE Company produces 440 stainless steel balls, which are widely used in medical equipment, automotive parts, and other fields that require high strength and corrosion resistance due to their superior performance.
| Approximate material | |||||||||
| Material | Number Designtion | Chemical Composition （%） | |||||||
| C | Si | Mn | P | S | Cr | Ni | Mo | ||
| 440 9Cr18 | 0.9 - 1 | 0 - 0.8 | 0 - 1 | 0 - 0.04 | 0 - 0.03 | 17 - 19 | 0 - 0.6 | / | |
| DIN 5401-2002 | ||||||||
| Dimensional and formt tolerance and surface roughness | ||||||||
| Grade | Nominal Size | Limit deviations | tDws | ∆RSw(≤) | Ra(≤) | VDwL(≤) | IG | Preferred gauges values |
| VDws (≤) | ||||||||
| (mm) | (μm) | (μm) | (μm) | (μm) | (μm) | (μm) | (μm) | |
| G 3 | 0 ~ 12.7 | ± 5.32 | 0.08 | 0.08 | 0.01 | 0.13 | 0.5 | -5 ~ +5 |
| G 5 | 0 ~ 12.7 | ± 5.63 | 0.13 | 0.13 | 0.014 | 0.25 | 1 | -5 ~ +5 |
| G 10 | 0 ~ 25.4 | ± 9.75 | 0.25 | 0.25 | 0.02 | 0.5 | 1 | -9 ~ +9 |
| G 16 | 0 ~ 25.4 | ± 11.4 | 0.4 | 0.4 | 0.025 | 0.8 | 2 | -10 ~ +10 |
| G 20 | 0 ~ 38.1 | ± 11.5 | 0.5 | 0.5 | 0.032 | 1 | 2 | -10 ~ +10 |
| G 28 | 0 ~ 50.8 | ± 13.7 | 0.7 | 0.7 | 0.05 | 1.4 | 2 | -12 ~ +12 |
| G 40 | 0 ~ 100 | ± 19 | 1 | 1 | 0.06 | 2 | 4 | -16 ~ +16 |
| G 80 | 0 ~ 100 | ± 14 | 2 | 2 | 0.1 | * | 4 | -12 ~ +12 |
| G 100 | 0 ~ 150 | ± 47.5 | 2.5 | 2.5 | 0.1 | 5 | 10 | -40 ~ +40 |
| G 200 | 0 ~ 150 | ± 72.5 | 5 | 5 | 0.15 | 10 | 10 | -60 ~ +60 |
| G 300 | 0 ~ 25.4 | ± 70 | 10 | 10 | 0.2 | * | 20 | -60 ~ +60 |
| G300 | 25.4 ~ 50.8 | ± 105 | 15 | 15 | 0.2 | * | 30 | -90 ~ +90 |
| G 300 | 50.8 ~ 75 | ± 140 | 20 | 20 | 0.2 | * | 40 | -120 ~ +120 |
| G 500 | 0 ~ 25.4 | ± 75 | 25 | 25 | * | * | 50 | -50 ~ +50 |
| G 500 | 25.4 ~ 50.8 | ± 112.5 | 25 | 25 | * | * | 75 | -75 ~ +75 |
| G 500 | 50.8 ~ 75 | ± 150 | 25 | 25 | * | * | 100 | -100 ~ +100 |
| G 500 | 75 ~ 100 | ± 187.5 | 32 | 32 | * | * | 125 | -125 ~ +125 |
| G 500 | 100 ~ 125 | ± 225 | 38 | 38 | * | * | 150 | -150 ~ +150 |
| G 500 | 125 ~ 150 | ± 262.5 | 44 | 44 | * | * | 175 | -175 ~ +175 |
| G 600 | all | ± 200 | * | * | * | * | * | * |
| G 700 | all | ± 1000 | * | * | * | * | * | * |
| ABMA Std. 10A - 2001 | |||||
| Grade | VDws(≤) | ∆RSw(≤) | Ra(≤) | VDwL(≤) | (μm) |
| (μm) | (μm) | (μm) | (μm) | ||
| G3A | 0.08 | 0.08 | 0.012 | 0.13 | * |
| G5A | 0.13 | 0.13 | 0.02 | 0.25 | * |
| G10A | 0.25 | 0.25 | 0.025 | 0.5 | * |
| G16A | 0.4 | 0.4 | 0.025 | 0.8 | * |
| G24A | 0.6 | 0.6 | 0.05 | 1.2 | * |
| G48A | 1.2 | 1.2 | 0.08 | 2.4 | * |
| G100A | 2.5 | 2.5 | 0.125 | 5 | ±12.5 |
| G200A | 5 | 5 | 0.2 | 10 | ±25 |
| G500A | 13 | 13 | * | 25 | ±50 |
| G1000A | 25 | 25 | * | 50 | ±125 |
| G2000A | 50 | 50 | * | 100 | ±250 |
