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In delivery condition it is soft & tough (200–250 HBW); under repeated impact or heavy abrasion the surface rapidly work‑hardens to 450–600 HBW, while the core remains ductile and crack‑resistant. It is non‑magnetic and maintains high toughness even at low temperatures.
Widely used for crusher liners, jaw plates, mill liners, chutes, hoppers, rail components, and earth‑moving machinery in mining, cement, quarrying, power, and steel plants.
- Common grades: Mn13, X120Mn12, 1.3401
- Standards: ASTM A128, GB/T 5680, EN X120Mn12, DIN 1.3401
2. Chemical Composition (wt%, typical)
Element C Si Mn P S Cr Ni Fe
Content 1.0–1.3 0.3–1.2 12–14 ≤0.04 ≤0.03 ≤2.0 ≤1.0 Balance
3. Mechanical Properties
Property As‑Supplied Work‑Hardened
Yield Strength ≥350 MPa —
Tensile Strength 700–900 MPa —
Elongation (A5) ≥35% —
Hardness 200–250 HBW 450–600 HBW
Impact Toughness ≥40 J (Charpy V) —
4. Dimension Range
- Thickness: 6–80 mm
- Width: 1500–3000 mm
- Length: 3000–12000 mm (cut‑to‑length available)
5. Delivery Condition & Surface
- Condition: Solution‑annealed (quenched from high temperature)
- Surface: Mill finish, shot‑blasted, or black painted
- Inspection: UT/MT available, full material traceability
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