15MH-non-magnetic high hardness material-

15 MH is the original material developed by our company and is a non-magnetic high hardness material.
It is widely used in the automobile industry as a material with excellent non-magnetic, corrosion resistance and wear resistance.
Please ask for details.

Features of 15 MH

non-magnetic	Magnetic permeability μ:1.01 or less It is used to prevent the magnetic influence of the magnetic medium and prevent adhesion between metals due to magnetism.
high hardness	Surface hardness HV 500 (about 2.5 times of SUS 304) It is used for parts requiring wear resistance, such as rotating shafts and sliding shafts. ※ HV700 can also be applied by special treatment.
food tolerance	SUS304 Equivalent It is used in rusty environments such as outdoors, coastal areas and water.

It is an image graph compared to other stainless steels.

Components and mechanical and physical characteristics

Ingredient List

Materials	C	Si	Mn	P	S	Ni	Cr	Mo	N
15MH	0.05～0.25	Below 1.00	9.00～16.00	Below 0.060	Below 0.030	1.00～6.00	16.00～19.00	-	0.20～0.40
SUS304	Below 0.08	Below 1.00	Below 2.00	Below 0.045	Below 0.030	8.00～10.50	18.00～20.00	-	-
SUS316	Below 0.08	Below 1.00	Below 2.00	Below 0.045	Below 0.030	10.00～14.00	16.0s0～18.00	2.00～3.00	-
SUS420J2	0.26～0.40	Below 1.00	Below 1.00	Below 0.040	Below 0.030	Below 0.60	12.00～14.00	-	-

Mechanical and physical properties

Materials	Hardness HV	Density G/cm³	Longitudinal modulus of elasticity × 10⁴N/mm²	specific heat J/(g · k)	coefficient of thermal conductivity W/(m･k)	Coefficient of thermal expansion × 10^－6/℃	than electricity Resistance μ Ω · cm	Magnetic
15MH	500	7.75	19.5	0.46	14.7	13.1	70	non-magnetic
SUS304	Below 200	7.93	19.3	0.59	16.3	16.1	72	non-magnetic
SUS316	Below 200	8.03	19.3	0.50	15.2	17.3	74	non-magnetic
SUS420J2	500～700	7.75	20.6	0.46	25.0	10.4	56	strong magnetism