CR100 Rail
Product Overview
CR100 Rail is a Japanese-standard heavy rail designed and manufactured to meet JIS E1103-91 / JIS E1101-93. Made from high-strength manganese alloy steel (U71Mn / 900A), CR100 delivers exceptional load-bearing capacity, bending resistance and fatigue life — suitable for high-speed rail, heavy-haul lines and crane rails.
Performance highlights
Superior strength & bending resistance — optimized I-section profile plus quench & temper process provide high bending stiffness and yield capacity for high-speed and heavy axle loads.
Excellent wear resistance — dense microstructure with fine, uniform grains reduces wear and extends service life.
Outstanding fatigue resistance — designed and validated for high-cycle loading; suitable for millions of load cycles.
Good corrosion resistance — optional surface corrosion treatments available for harsh environments to reduce life-cycle cost.
Technical Specifications
| Parameter | Value | Notes |
|---|---|---|
| Model | CR100 | Japanese crane/rail designation |
| Head width | 155 mm | Rail head width |
| Height | 120 mm | Overall rail height |
| Base width | 150 mm | Rail base width |
| Web thickness | 39 mm | Rail web thickness |
| Mass per metre | 100.2 kg/m | Theoretical mass |
| Standard lengths | 10 m / 12 m | Custom lengths available |
| Material | U71Mn / 900A | High-strength manganese alloy steel |
| Tensile strength | ≥ 880 MPa | See test report (download) |
| Hardness | ≥ 260 HB | After on-line heat treatment |
| Recommended axle load | ≥ 270 kN | Reference value; depends on track system |
Typical applications
High-speed rail — stable running surface, reduced vibration and noise, longer life under dynamic loads.
Heavy haul freight — supports repeated high axle loads (ten-tonne class), suitable for axle loads ≥ 270 kN.
Crane rails / port gantry rails — high fatigue life and load capacity for gantry and overhead cranes.
Urban rail & transit — smooth, stable running surface and low maintenance for frequent start/stop operation.
Quality standards & testing
Standards: JIS E1103-91 / JIS E1101-93 (please confirm clause references and any newer revisions).
Quality management: ISO 9001 certified (state version and certificate number on request).
Testing: Complete mechanical testing (tensile, yield, elongation, hardness, impact toughness), plus ultrasonic and eddy-current NDT; third-party inspection reports can be provided.
Supply & customization
Standard lengths: 10 m, 12 m (custom cuts available).
Surface finishes: as-rolled, galvanized, or anti-corrosion coating (optional).
Processing services: hole punching, cut-to-length, welding, secondary heat treatment and other custom processing.
Minimum order quantity (MOQ): dependent on configuration and contract; please request a quotation for firm MOQ.
Packaging & transport: tailored to shipping method and destination; details provided with quotation.
Manufacturing process
Refining & melting — 150 t top-and-bottom blown converter → LF refining → VD vacuum degassing to ensure steel cleanliness.
Rolling — billet continuous casting → reheating → high-pressure water descaling → rough rolling → universal mill finishing; typical 100-m rail produced within 8 minutes on the line.
On-line heat treatment — quench (cooling rate 20–50 °C/s) → tempering to achieve optimum metallurgical structure and balanced strength/toughness.
Precision finishing & inspection — multi-stage straightening → ultrasonic testing → eddy-current inspection → surface treatment and dimensional verification.
Installation & maintenance notes
Ensure rail seating and fastening systems match the CR100 section and design loads.
Follow recommended heat-treatment and welding procedures for on-site jointing.
Schedule regular NDT inspections in heavy-duty or high-traffic applications to monitor wear and fatigue.
FAQs
Q:Can CR100 Rail be welded?
A:Yes. Welding is possible but must follow the specified welding procedure for U71Mn; post-weld heat treatment may be required. We can supply welding procedure specifications.
Q:What is the typical lead time?
A:Lead time depends on order size and customization; standard orders typically ship within 2 weeks (please provide project details for a precise schedule).
Q: Can you provide sample rails or test coupons?
A: Sample pieces and test coupons can be supplied; charges and lead times apply.