Technical Details

Wear is the Loss or Deterioration of thickness on industrial Equipments, due to the friction of Minerals, Cement, Slag, Urban Waste etc. in Coal Power Stations, Cement factories, Mining, Fertilizer Industries etc.

Cement Industries   Mineral Processing Industries » Mechanical Causes of Wear » FRICTION : Rubbing between two surfaces ABRASION : Removal of particles IMPACT : Cracks and Breaks » Other Causes HEAT : Reduction of hardness CHEMICAL : Deterioration of microscopic structure

Cast Iron SLIDING FRICTION ABRASION IMPACT** HEAT CHEMICAL as per ASTM-A48 Class 20-60 High Low coefficient 0.9 to 1 times* High ** Medium 500 °C - *In Comparison with Mild Steel: 1 time **ANGLE OF INCIDENCE - maximum recommendable - depending on particle size of product being worn Guidelines by BMW Steels Ltd. for WEAR RESISTANCE for guidance only, having been produced - after selection of the product most appropriate to ORIGIN OF WEAR: Abrasion, Impact, Heat, Chemical, etc.- from data obtained on visits to Factories.

HARDNESS	ANALYSIS (%)									DENSITY
	C	Si	Mn	S	P	Ni	Cr	V	Ti
180 BHN	0.3 MAX	0.75 MAX	0.5 - 1.5	0.06	0.06	TRACES	TRACES	-	-	7.8 gm/cm³

Thickness minimum 12 mm.

Mild Steel SLIDING FRICTION ABRASION IMPACT** HEAT CHEMICAL as per ASTM-A201 Grade A,B & C Low Low coefficient 1 times* Very High** Low 300 °C - *In Comparison with Mild Steel: 1 time **ANGLE OF INCIDENCE - maximum recommendable - depending on particle size of product being worn Guidelines by BMW Steels Ltd. for WEAR RESISTANCE for guidance only, having been produced - after selection of the product most appropriate to ORIGIN OF WEAR: Abrasion, Impact, Heat, Chemical, etc.- from data obtained on visits to Factories.

HARDNESS	ANALYSIS (%)									DENSITY
	C	Si	Mn	S	P	Ni	Cr	V	Ti
180 BHN	0.3 MAX	0.75 MAX	0.5 - 1.5	0.06	0.06	TRACES	TRACES	-	-	7.8 gm/cm³

Thickness minimum 6 mm.

Chrome Steel SLIDING FRICTION ABRASION IMPACT** HEAT CHEMICAL as per IS 4896 Low Low coefficient 4 - 6 times* High** Low 200 °C Low *In Comparison with Mild Steel: 1 time **ANGLE OF INCIDENCE - maximum recommendable - depending on particle size of product being worn Guidelines by BMW Steels Ltd. for WEAR RESISTANCE for guidance only, having been produced - after selection of the product most appropriate to ORIGIN OF WEAR: Abrasion, Impact, Heat, Chemical, etc.- from data obtained on visits to Factories.

HARDNESS	ANALYSIS (%)									DENSITY
	C	Si	Mn	S	P	Ni	Cr	V	Ti
350 BHN	0.45 - 0.65	0.75 MAX	0.5 - 1	0.06	0.06	TRACES	0.8 - 1.5	-	-	7.8 gm/cm³

Thickness minimum 16 mm.

Ni-Hard SLIDING FRICTION ABRASION IMPACT** HEAT CHEMICAL as per IS 4771 Medium Low coefficient 10 - 12 times* Medium** 550 °C - *In Comparison with Mild Steel: 1 time **ANGLE OF INCIDENCE - maximum recommendable - depending on particle size of product being worn Guidelines by BMW Steels Ltd. for WEAR RESISTANCE for guidance only, having been produced - after selection of the product most appropriate to ORIGIN OF WEAR: Abrasion, Impact, Heat, Chemical, etc.- from data obtained on visits to Factories.

HARDNESS	ANALYSIS (%)									DENSITY
	C	Si	Mn	S	P	Ni	Cr	Mo	Ti
550 BHN	2.7 - 3.3	1.5 - 2.2	0.3 - 0.6	0.15 MAX	0.3 MAX	4 - 6	8 - 10	0.5 MAX	-	7.9 gm/cm³

Thickness minimum 20 mm.

Basalt SLIDING FRICTION ABRASION IMPACT** HEAT CHEMICAL Cast Basalt High Low coefficient 15 - 20 times* Low** 350 °C High *In Comparison with Mild Steel: 1 time **ANGLE OF INCIDENCE - maximum recommendable - depending on particle size of product being worn Guidelines by BMW Steels Ltd. for WEAR RESISTANCE for guidance only, having been produced - after selection of the product most appropriate to ORIGIN OF WEAR: Abrasion, Impact, Heat, Chemical, etc.- from data obtained on visits to Factories.

HARDNESS	ANALYSIS (%)								DENSITY
	Al2O3	SiO2	Fe2O3 / FeO	CaO	MgO	K2O	Na2O	TiO2
7 - 8 MOH	14	50	12	12	10	4	4	3	3 gm/cm³

Thickness minimum 20 mm.

Alumina SLIDING FRICTION ABRASION IMPACT** HEAT CHEMICAL Sintered Alumina Ceramic Very High Low coefficient 25 - 30 times* Medium** 1000 °C High *In Comparison with Mild Steel: 1 time **ANGLE OF INCIDENCE - maximum recommendable - depending on particle size of product being worn Guidelines by BMW Steels Ltd. for WEAR RESISTANCE for guidance only, having been produced - after selection of the product most appropriate to ORIGIN OF WEAR: Abrasion, Impact, Heat, Chemical, etc.- from data obtained on visits to Factories.

HARDNESS	ANALYSIS	DENSITY	COLOUR
08 - 09 MOH	Al 2O3 87 - 90 %	3.2 - 3.4 gm/cm³

Thickness minimum 10 mm. for mortar fixed and 15 mm for weld on tiles.

CBC SLIDING FRICTION ABRASION IMPACT** HEAT CHEMICAL Chemically Bonded Ceramics Very High Low coefficient 15 - 20 times* Medium** 1200 °C High** *In Comparison with Mild Steel: 1 time *** for chlorides & sulphides **ANGLE OF INCIDENCE - maximum recommendable - depending on particle size of product being worn Guidelines by BMW Steels Ltd. for WEAR RESISTANCE for guidance only, having been produced - after selection of the product most appropriate to ORIGIN OF WEAR: Abrasion, Impact, Heat, Chemical, etc.- from data obtained on visits to Factories.

HARDNESS	Compressive Strength	DENSITY	Fraction Energy
07 - 08 MOH	1200 Kg / cm²	2.5 - 2.9 gm / cm³	15,000 J / m²

Thickness minimum 05 mm.