MAX- ALLOY CHAIN
®
The complete range of Max-Alloy® chain, including sizes 7mm - 32mm diameters is manufactured in South Africa for both Grade 800 and Grade 1000, while sizes 36mm - 50mm are available in grade 800.
The steel is supplied by a local steel manufacturer in accordance with National and International standards specified for short link lifting chain.
Max-Alloy® is a heat treated, fine grain steel developed for use in chain slings for lifting applications.
Max-Alloy® is a range of heat-treated alloy steel chain specifically developed and manufactured for use in chain sling lifting applications.
Its superior material and mechanical properties make it suitable for all
safety-critical lifting operations.
MAX-ALLOY
®
GRADE 8 SHORT LINK SMOOTH WELD CHAIN
Traceability Markings
21A: Year and month of manufacture
34: Chain manufacturing machine number
01: Batch sequence number
H46: DGUV mark number
MA8: Manufacturer code & Grade (Max-Alloy® Grade 8)
MAX-ALLOY
®
GRADE 10 SHORT LINK SMOOTH WELD CHAIN
2022 PRODUCT DEVELOPMENT UPDATE
We have now developed and extended the range of Grade 10 chains to include 26mm and 32mm chains which increases the lifting capacity on those sizes with 25% compared to the same size Grade 8 chains. These sizes are being manufactured on a state of the art robotic cell to the highest quality standards. The advantages of the larger diameter grade 10 chain sizes apart from the ability to be able to carry heavier loads size for size compared to grade 8 chain sizes also have the advantage of using a smaller grade 10 chain size to replace a larger grade 8 chain size. This is a significant advantage from an ergonomically point of view, allowing easier handling of lifting equipment especially in hostile environments. Grade 10 chains are excellent for normal industrial applications although it should be noted that Grade 10 chains are not suitable for general corrosive -and offshore applications.
Manufacturing, Testing & Inspection
All Max-Alloy® products are 100% proof tested at 2.5 times the Working Load limit to ensure weld integrity and compliance with national and international standards
A stringent quality control plan ensures a fit for purpose product with a factor of safety of 4:1.
All measuring and testing equipment is maintained and calibrated at required intervals to ensure reliable
test results.
All Max-Alloy® products have full traceability from steelmaking to the end product.
PRODUCT TYPE APPROVALS & MANAGEMENT SYSTEMS
What is DNV Approved Products?
DNV (Det Norske Veritas®) is one of the world’s leading certification bodies that deliver world-renowned testing, certification, and technical advisory services.
We manufacture DNV Master links and sub-assemblies ranging from 16mm to 75mm in diameter. Its working load limits range from 4.1- 100 tons, in accordance with the requirements of the DNV 2.7-1 and DNV 2.7-3 standards. In addition, we also manufacture various configurations of fully welded chain slings as per customer requirements.
Lifting set components
Chain sling assemblies
ANNOUNCEMENT FROM THE GENERAL MANAGER
There is a growing concern within the South African market regarding the supply of chain products.
McKinnon Chain has recently observed a significant increase in non-conforming Grade 3 and Grade 5 chain being sold under the pretence of being fully compliant and certified with SANS 251specification.
Alarmingly, the number of incidents involving failures of these non-compliant chains is rising rapidly.
Long-link and extra-long-link medium tolerance steel chains
Chain slings of welded construction Grade 4-Grade 8
Short link steel chain medium tolerance
GRADE 8 VS GRADE 10: PROS AND CONS
What to consider when choosing between Grade 8 and 10?
* Generally a Grade 10 chain of one chain size smaller than its Grade 8 counterpart is capable of lifting the
same load, which will result in a considerable reduction in sling weight.
**Extreme Heat Conditions
The strength of all chain slings is adversely affected by heat, and care must be exercised when using chain slings at elevated temperatures.
Where the temperatures are likely to be higher than 200 , it will be necessary to de-rate the specified WLL as per the below WLL reduction guidelines table.
Note: Grade 10 chain is not be used in applications > 200
°C
°C
GRADE 10
GRADE 8
HEAT TREATMENT
Max-Alloy® Grade 8 chains and fittings do not require periodic heat treatment and must never be reheated other than by McKinnon Chain.
SURFACE COATING
Max-Alloy® Grade 8 products should not be galvanized or subjected to other plating processes without the approval of McKinnon Chain.
Please contact our Max-Alloy® distributor for detailed recommendations. We are mass chain suppliers.
CORROSIVE CONDITIONS
Max-Alloy® Chain and attachments should not be used in an acidic or any other corrosive environment.
