400 series stainless steel balls are also known as martensitic stainless steel balls. This series include 420 stainless steel balls, 440C stainless steel balls etc. 400 series stainless steel balls uses high carbon chromium stainless bearing steel as raw material, perfectly combined high precision, high material strength and stainless. Besides, 400 series stainless steel balls have good resistance of water, foot, alcohol, organic material and petrochemical products. Thus, 400 series stainless steel balls are widely used in stainless bearing, valve, pump, petrochemical industry etc.
Description
MZ 400 series stainless steel ball
Size Range
Ø 1.588 mm – Ø 50.80 mm
Precision Grade
420 stainless steel balls
440C stainless steel balls
G 100, G 200, G 500, G 1000
G 10, G 16, G 20, G 24, G 28, G 40, G 60,
G 100, G 200
Equivalence of Material
Standard
GB (CN)
ASTM/AISI (US)
ГОСТ (RU)
BS (UK)
JIS (JP)
NF (FR)
DIN / VDEh (DE)
DIN / VDEh (DE)
420
2Cr13
420
20X13
420S37
SUS420J1
Z20C13
X20Cr13
*
440C
9Cr18
440C
95X18
*
SUS440C
*
X45Cr13
*
440C
9Cr18Mo
440C
X18M
*
SUS440C
*
X110CrMo18
X110CrMo15
Chemical Composition
Element
Carbon (C)
Silicon (Si)
Manganese (Mn)
Phosphorous (P)
Sulphur (S)
Nickel (Ni)
Chromium (Cr)
Molybdenum(Mo)
420
0.16% – 0.25%
≤ 1%
≤ 1%
≤ 0.040%
≤ 0.03%
≤0.60%
12% – 14%
*
440C (9Cr18)
0.90% – 1.00%
≤ 0.80%
≤ 0.80 %
≤ 0.04%
≤ 0.03%
≤0.60%
17% – 19%
*
440c (9Cr18Mo)
0.95% – 1.10%
≤ 0.80%
≤ 0.80%
≤ 0.04%
≤ 0.03%
≤0.60%
16% – 18%
0.40% – 0.7%
Mechanical Property
Item
Extensibility
Tensile strength
Elongation
Area reduction
Impact energy
Anti-corrosion
Magnetic
420
440 N/mm^3
640 N/mm^3
20%
50%
63J
Yes
Yes
440C (9Cr18)
*
*
*
*
*
Yes
Yes
440C (9Cr18Mo)
*
*
*
*
*
Yes
Yes
Application
Stainless bearing, valve, pump, petrochemical industry etc.
Tag: 400 series stainless steel balls, 420 stainless steel balls, 440C stainless steel balls, stainless steel balls, steel balls