Wear-Resistant Castings for Mining, Crushing & Aggregate Processing

Huasuma casts and machines the wear parts that keep crushing and aggregate plants running: crusher hammers, jaw and cone crusher liners, blow bars, impact plates, side guard plates, and wear plates. Every part is engineered around one question — how does this component actually fail in your crusher? Impact, abrasion, or both? Our material grades, heat treatment, and inspection process are built to answer it, part by part.

We supply high-manganese steel (Mn13Cr2, Mn18Cr2, Mn22Cr2Mo), high-chrome white iron (Cr15, Cr20, Cr26, Cr28), martensitic alloy steel, and bimetallic composite castings, with typical single-piece weights from 5 kg to 500 kg. Parts fit mainstream jaw, cone, hammer, and impact crushers — including PE/PEX and PF series machines — and are compatible with major international crusher brands. Custom shapes, tooth profiles, and mounting holes are produced to your equipment drawings.

Crusher Hammers — Mn13Cr2, Mn18Cr2, Cr26 & Bimetallic

The hammer is the most severely stressed wear part in a hammer or impact crusher: feed material is struck directly at tip speeds of 20–40 m/s. Material choice therefore follows the working condition. High-manganese steel hammers (Mn13Cr2, Mn18Cr2) arrive at HB 170–260 as-cast and work-harden under impact to HB 400–500+, getting harder the harder they work — Mn18Cr2 with ≥120 J/cm² impact toughness is the grade for large, hard rock where breakage risk rules out brittle materials. High-chrome iron hammers (Cr26/Cr28) deliver HRC 58–62 final hardness with no work-hardening required; in low-impact, high-abrasion duty such as sand making they outwear Mn13 by 3–5×. For extreme impact-plus-abrasion conditions, bimetallic composite hammers combine an HRC 58–62 high-chrome working face with a tough low-carbon steel back — wear resistance where it is needed, crack resistance where it matters.

Jaw & Cone Crusher Liners

Fixed and swing jaw dies, mantles and concaves in high-manganese steel Mn13, Mn18Cr2 and Mn22Cr2Mo. As-cast hardness HB 170–260 rises to HB 450–550 under working impact; Mn18Cr2 liners deliver ≥750 MPa tensile strength, ≥400 MPa yield, and ≥120 J/cm² impact toughness for granite, iron ore, and quartzite duty. Chrome-moly alloy steel liners suit medium-impact, high-abrasion positions where work-hardening cannot be relied on, and high-chrome white iron liners serve low-impact, extreme-abrasion niches. Tooth profile, thickness, and mounting are matched to your crusher model — PE/PEX series jaw crushers and industry-standard cone crushers, including Sandvik, Metso/Nordberg, and Terex compatibility.

Blow Bars for Impact Crushers

High-chrome white iron blow bars (KmTBCr15 / Cr20 / Cr26) and martensitic alloy steel blow bars for PF-series and equivalent impact crushers. Where conventional manganese blow bars depend on heavy impact to work-harden, high-chrome bars arrive at HRC 58–65 final hardness and hold a stable wear rate from the first hour — in medium-impact duty the wear loss is only 60–70% of comparable manganese bars. Cr15 balances wear and toughness for limestone and construction aggregate; Cr20 and Cr26 step up abrasion resistance for granite, river pebble, and iron ore; martensitic steel at HRC 48–55 with ≥15 J/cm² impact toughness covers high-impact, large-feed conditions. Composite-cast bars with a high-chrome face and alloy steel back are available for the harshest combined duty. Typical bar weights run 15–220 kg, made to your length, thickness, and bolt pattern.

Impact Plates & Side Guard Plates

Primary and secondary impact plates control both the crushing cycle and product size: material thrown by the rotor at 25–40 m/s strikes the plate, breaks, and rebounds for repeated impacts. First-stage plates take the heaviest impact and are specified in thicker-section high-manganese steel (Mn13Cr2, work-hardening to HB 300–450+; Mn18Cr2 to HB 450–550+); second-stage plates see less impact but more sliding abrasion, where Cr26 high-chrome iron at HRC 58–62 extends service life 1.5–2× over Mn13. Composite-cast and 30CrMnSi-type medium-carbon alloy steel (HRC 45–55) options round out the range for PF-1007 through PF-1520 machines.

Side guard plates (cheek plates) protect the crusher frame walls between the jaw dies from abrasive cutting and lateral impact. Supplied in Mn13Cr2, Mn18Cr2, and Mn22Cr2Mo, 20–80 mm thick, with bolt-on mounting matched to your machine — jaw crushers PE/PEX series and cone crusher feed zones, with Sandvik C-series and Metso HP/GP-series compatibility.

Wear Plates & Mixer Blades

High-chrome white iron wear plates and mixer blades (KmTBCr15/20/26) at HRC 50–63 serve crushers, screens, chutes, and concrete mixers. In concrete batching plants, ordinary cast-steel mixer blades wear out in 3–6 months — mixing efficiency drops, concrete quality drifts, and the plant stops for change-outs. High-chrome blades at HRC 50+ run 6–12 months with uniform, predictable wear. Sodium silicate, resin-bonded, and shell-mold casting processes are selected per part size and tolerance requirement.

Material Selection Guide

Choosing the right grade is a working-condition decision, not a catalog default:

• Mn13Cr2 — standard Hadfield manganese steel, HB 170–230 as-cast, work-hardening to HB 400–500+. Economical for limestone, coal, and medium-hardness feed.
• Mn18Cr2 — super-manganese, HB 180–260 as-cast, ≥120 J/cm² impact toughness, work-hardening past HB 500. First choice for large, hard, high-impact rock.
• Mn22Cr2Mo — ultra-high manganese with Cr-Mo, for extreme impact-and-wear conditions.
• Cr26/Cr28 high-chrome iron — HRC 58–62 final hardness, no work-hardening needed; 3–5× the wear life of Mn13 in low-impact, high-abrasion duty such as sand making and fine crushing.
• Martensitic alloy steel — HRC 48–55 with ≥15 J/cm² toughness, for high-impact positions where chrome iron would be too brittle.
• Bimetallic composite — HRC 58–62 working face metallurgically bonded to a tough steel back, for conditions that destroy single-material parts.

Casting, Heat Treatment & Inspection

Manganese grades are sand-cast at 1,380–1,420 °C and water-toughened at 1,050–1,100 °C followed by water quench, producing the single-phase austenitic structure that makes work-hardening possible. High-chrome irons receive quench-and-temper treatment that optimizes carbide morphology from networked M₃C to isolated M₇C₃ — the difference between wear resistance on paper and wear resistance in the crusher. Bimetallic parts are cast in two stages and heat-treated in zones so the working face reaches HRC 58–62 while the back stays tough.

Two rules are enforced before every pour: furnace-front temperature measurement and furnace-front sample chemical analysis — no pour proceeds until chemistry is confirmed 100% on specification. After heat treatment, every part passes 100% hardness testing (three points per piece, averaged), metallographic verification of the target microstructure, and dimensional tolerance checks. Material certificates, inspection reports, and hardness maps are available with each shipment. Huasuma operates an ISO 9001 quality system with 30 years of casting export experience to customers worldwide.

Why Huasuma for Mining & Crushing Wear Parts

Five material systems with independent heat-treatment parameters — not one recipe for every crusher. Verifiable target microstructures, not “approximately met” specifications. Problems caught before shipment, not after installation. Share your crusher model, feed material, and current wear life, and our engineers will recommend a grade — and stand behind it. Send drawings or samples for a 24-hour quotation.

Explore our metal casting capabilities, or contact our wear-parts specialists for a material recommendation.