Every tonne matters—both the one you lift and the hidden ones hanging from the hook. Topone Grade 100 chain turns that paradox on its head. With Cr-Ni-Mo alloy steel, 980 MPa yield, and 25 % bigger working-load limits than G80, it lets riggers keep safety margins high while trimming sling mass and crane headroom loss. This guide unpacks the genuine parameters published on our site, shows how each size balances strength and weight, and walks you through a one-minute selection routine. Learn the numbers, avoid guesswork, and match your next heavy lift to a chain that works harder while it weighs less.

Why Grade 100 Adds Muscle Without Fat

Topone forges every link from EN 1.6758 steel then flash-butt welds, water-quenches, and tempers to HRC 39–45. That recipe locks in 1 180 MPa tensile and 980 MPa yield, yet keeps elongation above 25 % so links absorb shock instead of cracking. Proof tests at 2.5 × WLL confirm weld integrity before shipping, and each 10 m carries a deep “10 – TPN” stamp plus heat code for instant traceability. (lifting-chain.com)

Topone Grade 100 Size Matrix

Quick takeaway: a 16 mm G80 chain tops out at 8 t WLL, yet the same-diameter G100 lifts 10 t for only 200 g extra per metre. In many jobs you can even step down a whole diameter—swapping 13 mm G80 for 10 mm G100—and still hit the target load while shedding 1.6 kg per metre.

One-Minute Selection Routine

Define routine load. Write the heaviest weight you lift on a normal day—ignore one-off peaks.

Add rigging mass. Chain, hooks, shackles, spreader beams—count them all.

Factor in sling angle. Multiply by the EN 818-4 coefficient (×1.4 @ 45°, ×2.1 @ 60° when four legs).

Open the matrix. Pick the first diameter whose WLL meets or beats the result.

Check geometry. Ensure outside width fits hook throat and available headroom.

Log the ID. Record the stamped code in your maintenance app for future inspections.

Finish the six steps in under a minute and you’ll never oversize or underspec again.

Coatings That Match the Environment

Black electrophoresis — economical for dry indoor bays.

Phosphate film — 480 h neutral salt-spray rating for dusty yards or quarries.

Blue powder coat — tough polyurethane skin, easy to spot wear flats.

Hot-dip zinc — 70 µm alloy layer survives ≥1 000 h ISO 9227; best for marine decks and chemical plants.
Surface treatments alter weight by less than 3 %, so always choose based on corrosion hours rather than capacity. (lifting-chain.com)

Built-In Compliance & Maintenance

Every chain ships with a digital EN 10204-3.1 certificate and TÜV surveillance report. On site, crews spend two minutes: measure mid-link diameter (retire at 10 % loss), check five-link pitch (scrap at 3 % stretch), and scan for cracks or rust nests. Even in Nordic winters (-40 °C) the steel keeps impact toughness, while top temperature of 200 °C covers most mill work. (lifting-chain.com)

Final Word

Higher capacity, slimmer weight, certified traceability—Topone Grade 100 chain lets every heavy lift run lean and safe. Specify the size that fits your numbers today and feel the difference on the very next hook-up. Contact us for more information!