Wear Parts

Cr-Mo Alloy Steel Wear Parts

SAG Liners

SAG mill liners made from Cr-Mo alloy steel offer the optimal balance of hardness and toughness for semi-autogenous grinding. The alloy withstands both impact from grinding balls and abrasion from ore.

Cr-Mo Alloy SteelHRC 42-52

Good combination of hardness and toughness; ideal for SAG mill liners, grate bars and crusher frame liners under abrasiv...

ZG30CrMnMoHRC 45-55

Excellent balance of hardness and toughness; optimized for sizer tooth picks under combined impact + shear loading...

Compatible Equipment:Metso SAG/AG Mills FLSmidth SAG/AG Mills CITIC Heavy Industries SAG/AG/Ball Mills

Ball Mill Liners

Ball mill liners require consistent hardness and impact resistance for continuous grinding. ZG30CrNiMo with its higher Ni content provides 67% better toughness than standard Cr-Mo grades.

Cr-Mo Alloy SteelHRC 42-52

Good combination of hardness and toughness; ideal for SAG mill liners, grate bars and crusher frame liners under abrasiv...

ZG30CrNiMoHRC 45-55

Ni substitution for Mn increases toughness by 67% vs ZG30CrMnMo (AKV 20-25J vs 10-15J); essential for heavy tooth picks ...

Compatible Equipment:UZTM-KARTEX МШР Ball Mills Metso SAG/AG Mills

AG Liners

AG (autogenous) mill liners experience high impact from large ore pieces. Cr-Mo alloy steel provides the toughness needed while maintaining adequate hardness for wear resistance.

Cr-Mo Alloy SteelHRC 42-52

Good combination of hardness and toughness; ideal for SAG mill liners, grate bars and crusher frame liners under abrasiv...

ZG30CrMnMoHRC 45-55

Excellent balance of hardness and toughness; optimized for sizer tooth picks under combined impact + shear loading...

Compatible Equipment:Metso SAG/AG Mills FLSmidth SAG/AG Mills

Material Grades & Specifications

Cr-Mo Alloy Steel — Material Grades & Specifications

ZG30CrMnMoGB ZG30CrMnMo / Low-alloy Cr-Mo wear steel

HardnessHRC 45-55

ToughnessAKV 10-15J

Tensile≥ 850 MPa

Yield≥ 650 MPa

Models	C	Si	Mn	Cr	Mo	Ni
ZG30CrMnMo	0.26-0.34	0.40-0.80	0.90-1.30	0.90-1.30	0.15-0.25	—

Excellent balance of hardness and toughness; optimized for sizer tooth picks under combined impact + shear loading

ZG30CrNiMoGB ZG30CrNiMo / Ni-enhanced Cr-Mo alloy cast steel

HardnessHRC 45-55

ToughnessAKV 20-25J

Tensile≥ 900 MPa

Yield≥ 700 MPa

Models	C	Si	Mn	Cr	Mo	Ni
ZG30CrNiMo	0.26-0.34	0.40-0.80	0.60-1.00	0.90-1.30	0.15-0.25	0.90-1.30

Ni substitution for Mn increases toughness by 67% vs ZG30CrMnMo (AKV 20-25J vs 10-15J); essential for heavy tooth picks (>25kg) with higher bending moment

Cr-Mo Alloy SteelASTM A217 WC6/WC9 / GB ZG15CrMo

HardnessHRC 42-52

ToughnessAKV ≥ 25J

Tensile≥ 750 MPa

Yield≥ 550 MPa

Models	C	Si	Mn	Cr	Mo	Ni
Cr-Mo Alloy Steel	0.15-0.25	0.30-0.60	0.50-0.80	1.00-1.50	0.45-0.65	—

Good combination of hardness and toughness; ideal for SAG mill liners, grate bars and crusher frame liners under abrasive wear

Gallery

Cr-Mo Alloy Steel

Materials

Material Classification

High Manganese Steel High Chrome Cast Iron Ceramic & Carbide Composites Bimetal Composite Rubber & Polyurethane Hardfacing & Repair Special Alloys

Cr-Mo Alloy Steel

Cr-Mo Alloy Steel Wear Parts

SAG Liners

Ball Mill Liners

AG Liners

Cr-Mo Alloy Steel — Material Grades & Specifications

Cr-Mo Alloy Steel

Material Classification

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