catalogue >> Manganese Chromium Steels for Machine Structural use

Steel Type	Standard	Country Code	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Cr(%)	Ni(%)
20MnCr5	17210	DIN	0.17-0.22	<0.4	1.0-1.4	<0.035	<0.035	1.0-1.3
5120	-	AISI	0.17-0.22	0.15-0.30	0.7-0.9	<0.035	<0.04
15CrMn	3077	GB	0.12-0.18	0.17-0.37	1.1-1.4	<0.035	<0.035	0.4-0.7	<0.3
5115	-	AISI	0.13-0.16	0.15-0.30	0.7-0.9	<0.035	<0.04	0.7-0.9
16MnCr5	17210	DIN	0.14-0.19	0.15-0.40	1.0-1.3	<0.035	<0.035	0.8-1.1
SMnC420	4445	CNS	0.17-0.23	0.15-0.35	1.2-1.5	<0.03	<0.03	0.35-0.70	<0.25
20CrMn	3077	GB	0.17-0.23	0.17-0.37	0.9-1.2	<0.035	<0.035	0.9-1.2
SMnC420	4106	JIS	0.17-0.23	0.15-0.35	1.2-1.5	<0.03	<0.03	0.35-0.70	<0.25
20CrMnSi	3077	GB	0.17-0.23	0.9-1.2	0.8-1.1	<0.035	<0.035	0.8-1.1
30CrMnSi	3077	GB	0.27-0.34	0.9-1.2	0.8-1.1	<0.035	<0.035	0.8-1.1	<0.3

Manganese chromium steels, also known as Hadfield steels, are a type of austenitic steels that contain high levels of manganese and chromium. These steels are primarily used in machine structural applications where high wear resistance, toughness, and corrosion resistance are required.

The main alloying elements in manganese chromium steels are manganese and chromium, which provide several key properties to the steel. Manganese enhances the strength and hardenability of the steel, while chromium improves corrosion resistance and wear resistance. The combined effect of these elements results in a steel that is highly resistant to wear and abrasion.

Due to their high wear resistance, manganese chromium steels are commonly used in various machine structural applications. They are often used in the manufacture of crusher parts, mining equipment, grinding balls, and railway crossings. In these applications, the steel's wear resistance ensures that the parts can withstand the harsh operating conditions and maintain their performance for longer periods.

Another important feature of manganese chromium steels is their toughness. These steels have excellent impact resistance, making them suitable for applications where the material is subjected to high dynamic loads or shock. This toughness is attributed to the austenitic microstructure of the steel.

Corrosion resistance is another advantageous property of manganese chromium steels. The high chromium content forms a passive oxide layer on the surface of the steel, protecting it from corrosion in aggressive environments. This corrosion resistance makes these steels suitable for applications where the material is exposed to acidic or corrosive conditions.

In conclusion, manganese chromium steels are an excellent choice for machine structural applications that require high wear resistance, toughness, and corrosion resistance. Their unique combination of properties makes them ideal for demanding environments where durability and performance are critical.