Rigging Hardware — Grade 80 Chain Sling
Grade 80 Chain Sling capacity check with the standard derating rules applied.
The 0.0314·d² fit lands on the standard G80 table (8 mm→2.0 t, 13 mm→5.3 t, 16 mm→8.0 t) almost exactly — chain WLL really is a d² story. Heat is chain's enemy: G80 derates above 200 °C and is forbidden for lifting after exposure past 400 °C, a history no calculator can detect.
Formula
Note: Rigging and crane decisions are life-safety critical. This calculator is a planning aid — the load chart, sling tags, site lift plan and a qualified lift director govern every real lift.
Grade 80 Chain Sling capacity check with the standard derating rules applied. A free crane load, wind & rigging safety tool — no sign-up, no upload, instant results in your browser.
About Rigging Hardware — Grade 80 Chain Sling
Rigging Hardware — Grade 80 Chain Sling computes the governing relationship WLL(t) ≈ 0.0314·d² × grade factor (G80, d in mm) live as you type. The 0.0314·d² fit lands on the standard G80 table (8 mm→2.0 t, 13 mm→5.3 t, 16 mm→8.0 t) almost exactly — chain WLL really is a d² story. Heat is chain's enemy: G80 derates above 200 °C and is forbidden for lifting after exposure past 400 °C, a history no calculator can detect. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Rigging Hardware — Grade 80 Chain Sling
- 1Enter your values — Chain size, Grade factor (80 = 1.0, 100 = 1.25) (sensible defaults are pre-filled).
- 2Read the live results: Single-leg vertical WLL.
- 3Check the "with your numbers" line to see WLL(t) ≈ 0.0314·d² × grade factor (G80, d in mm) substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Rigging Hardware — Grade 80 Chain Sling?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula WLL(t) ≈ 0.0314·d² × grade factor (G80, d in mm) with authoritative sources cited on the page (ASME B30.5/B30.9/B30.20 — Cranes, slings and below-the-hook devices; Wire Rope Technical Board — Wire Rope Users Manual, 4th ed.)
- ✓The 0.0314·d² fit lands on the standard G80 table (8 mm→2.0 t, 13 mm→5.3 t, 16 mm→8.0 t) almost exactly — chain WLL really is a d² story.
- ✓SI ⇄ Imperial toggle converts your inputs in place, so you can work in the units your drawings use
Frequently asked questions
What formula does the rigging hardware — grade 80 chain sling use?+
It evaluates WLL(t) ≈ 0.0314·d² × grade factor (G80, d in mm), exactly as published. Sources: ASME B30.5/B30.9/B30.20 — Cranes, slings and below-the-hook devices; Wire Rope Technical Board — Wire Rope Users Manual, 4th ed.. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
The 0.0314·d² fit lands on the standard G80 table (8 mm→2.0 t, 13 mm→5.3 t, 16 mm→8.0 t) almost exactly — chain WLL really is a d² story. Rigging and crane decisions are life-safety critical. This calculator is a planning aid — the load chart, sling tags, site lift plan and a qualified lift director govern every real lift.
When is this calculator the right tool for the job?+
Grade 80 Chain Sling capacity check with the standard derating rules applied. A free crane load, wind & rigging safety tool. Heat is chain's enemy: G80 derates above 200 °C and is forbidden for lifting after exposure past 400 °C, a history no calculator can detect. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Does it support both metric and imperial units?+
Yes — the SI ⇄ Imperial toggle converts the values already in the fields, preserving the physical quantity, so you can flip mid-calculation without re-entering anything.
Related tools
- Rigging Hardware — Shackle Selection
- Rigging Hardware — Eyebolt Angular Loading
- Rigging Hardware — Synthetic Web Sling
- Rigging Hardware — Round Sling (Colour Code)
- Rigging Hardware — Hook Loading Position
- Rigging Hardware — Sling D/d Ratio Derate
- Rigging Hardware — Turnbuckle Selection
- Emergency — SCSR Duration vs Demand
- Surface Treatment — Prime Coat on Granular Base
Related Manufacturing tools
Spindle Speed Calculator — Aluminum 6061
Carbide starting RPM for milling Aluminum 6061: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● LiveSpindle Speed Calculator — Mild Steel 1018
Carbide starting RPM for milling Mild Steel 1018: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● LiveSpindle Speed Calculator — Stainless 304
Carbide starting RPM for milling Stainless 304: n = 1000·Vc/(π·D) with a handbook cutting speed preset.
● Live