AISI type 420 stainless steel balls have fair-to-good corrosion resistance and good material strength. They resist corrosion from alcohol, ammonia, food environments, fresh water, many petroleum products and organic materials and some mild acid environments. They are found in bearings, valves, lighters and writing instruments.
| AISI 420 | |||
| SIZE RANGE | 1.00mm (.040") up to 1-1/4" | ||
| GRADES: | 25, 50, 100, 500, 1000, 2000 | ||
| CHEMICAL COMPOSITION | |||
| CHROMIUM | 12%-14% | ||
| CARBON | .15% MAX. | ||
| NICKEL | |||
| MANGANESE | 1% MAX. | ||
| SILICON | 1% MAX. | ||
| PHOSPHOROUS | .040% MAX. | ||
| SULPHUR | .03% MAX. | ||
| MECHANICAL PROPERTIES | |||
| HARDNESS ROCKWELL | 48 MIN. | ||
| TENSILE STRENGTH | 95,000-250,000 PSI | ||
| ELONGATION IN TWO INCHES | 8%-25% | ||
| REDUCTION IN AREA | 25%-50% | ||
| MODULUS IN ELASTICITY | 29,000,000 PSI | ||
| DENSITY | 0.279 LBS./CU. IN. | ||
| PHYSICAL CHARACTERISTICS | |||
| CORROSION RESISTANCE | FAIR | ||
| MAGNETIC | YES | ||
| GENERAL USAGE | |||
| BEARINGS, VALVES, LIGHTERS, WRITING INSTRUMENTS | |||
