Using chromium as a shield, we reshape the strength and lifespan of steel.

Material Matrix: Precisely matching load and mission.

Chromium Steel's Four-Dimensional Performance Transformation

Achieve the Golden Balance of Strength and Toughness

◉ 40Cr's impact energy reaches 70J (-20°C)**, a 200% improvement over comparable carbon steels

◉ 42CrMo's fatigue limit σ-1 ≥ 500MPa, triples its ability to withstand alternating loads

Revolutionary wear resistance

35CrMo roller life: Rolling 180,000 tons of steel strip without spalling

42CrMo gears: Meshing wear <5μm after 1 million cycles

Breakthrough in corrosion protection

Salt spray test: 480 hours with zero substrate rust (20Cr after chrome plating)

Corrosion resistance in sulfur-containing oil and gas environments increased 8x (35CrMo surface phosphate treatment)

Unprecedented thermal strength

42CrMo maintains:

✓ Yield strength ≥ 650 MPa

✓ Oxidation weight gain < 1 g/㎡·h at 450°C**

From materials to finished parts, value creation is realized.

Meixinchang's exclusive intelligent manufacturing chain:

Precision bar blanking → Multi-directional die forging → CNC precision turning → Controlled atmosphere heat treatment → Cryogenic stabilization

Typical end products:

🔩 12.9-grade wind turbine tower bolts (42CrMo): Preload retention >95% (30-year cycle)

⚙️ Shield machine cutterhead drive shaft (35CrMo): Torsional strength ≥1200MPa

🚗 New energy reducer gears (20Cr): Carburized layer depth 1.2mm ±0.05mm

Quality Control: Defining Reliability with Data

Indicators | National Standard Requirements | Meixinchang Commitment

Composition deviation：Cr±0.15% Cr±0.05%

Hardenability bandwidth：≤8HRC ≤4HRC

Ultrasonic flaw detection：Φ2mm equivalent Φ1mm equivalent

Non-metallic inclusions：≤2.0 level ≤1.0 level

► Each batch comes with: hardenability curve + end-quenching sample + metallographic analysis report

Choose Meixinchang's irreplaceable advantages

✅ Chrome Steel Think Tank: A database of over 200 heat treatment processes accumulated over 10 years, offering free parameter optimization

✅ Extreme Processing: Ø1200mm diameter die forgings with a tolerance of ±1.5mm (industry standard ±3mm)

✅ Failure Guarantee: Provides material-structure combined FEA simulation to predict failure risks

✅ Global Response: Emergency orders are handled through three-shift production, with finished forgings delivered within 72 hours