440C SS Media Set for 500ml Planetary Mill Jars

Contains: 14 pieces (195g) 15 mm, 119 pieces (487g) 10 mm, and 573 pieces (292g) 5 mm 440C SS milling media balls for optimal milling.

Product SKU#: BA0770

Polished 440C stainless steel is a high carbon steel with moderate corrosion resistance. 440C stainless steel grinding media balls have the highest strength and wear resistance among all the stainless steel alloys due to its high carbon content. The high wear resistance and strength make it a good choice for milling media, 440C is also used for ball bearings and valve parts. Good resistance to the atmosphere, fresh water, foods, alkalies and mild acids. The corrosion resistance of grade 440C approximates that of grade 304 in many environments.

General Description for 440C Stainless Steel Grinding Media

Material: 440C Stainless Steel (304 stainless steel, 316 stainless steel, and chrome steel grinding balls are available)
Grade: ASTM/ASTE S44004
Density: 7.8 g/cm³

CHEMICAL COMPOSITION
CHROMIUM	17%
CARBON	1.1%
MANGANESE	1%
SILICON	1%
MOLYBDENUM	0.75%
Iron	79.15%

MECHANICAL PROPERTIES
TENSILE STRENGTH	110,000 TO 286,000 PSI
YIELD STRENGTH (@ strain 0.200%)	65300-276000 psi
ELONGATION AT BREAK	2-14 %
BULK MODULUS	24100 ksi
MODULUS OF ELASTICITY	29008 ksi
DENSITY	.282 LBS./CU.IN.
HARDNESS (Rockwell B)	97

PHYSICAL CHARACTERISTICS
CORROSION RESISTANCE	GOOD
MAGNETIC	YES

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