Grade 80 Chain

TOPONE® Grade 80 chain uses low-carbon alloy steel containing Cr, Ni, Mo, and Al. It is quenched at a temperature above AC3 and tempered at a temperature above 400 degrees Celsius. This makes the chain strong, tough, and fatigue-resistant. It is suitable for any cargo lifting or transportation lashing scenarios. All chains are tested for a tensile force of 2.5 times the working load before leaving the factory.The chain is stamped with "G8" grade and batch number identification.

Grade 80 Chain Overhead Lfting Tow & Binder Chain Medium Tolerance Short link chain

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Introduction

TOPONE® lifting chain short link chain complies with European and American standards and can be barreled or cut to any length. Medium frequency heat treatment is used to make the chain stronger and more wear-resistant.

Parameter

Lifting chain drawings

Chain Size	Inside Width min.	Outside Width max.	Working Load Limit	Proof Load	Breaking Load	Weight
d x p	b1	b2	WLL	MPL	MBL	(kg/m)
(mm)	(mm)	(mm)	(ton)	(KN)	(KN)	(kg/m)
6 x 18	7.5	21	1.1	27	45.2	0.79
7 x 21	9	24.5	1.5	37	61.6	1.07
8 x 24	10	28	2	48	80.4	1.38
10 x 30	12.5	35	3.2	76	125	2.2
11 x 43	12.6	36.5	3.8	92	154	2.33
12 x 36	15	42	4.6	109	181	3.1
12.5 x 38	15.5	42.2	4.9	117	196	3.3
13 x 39	16.3	46	5	128	214	3.8
14 x 42	18	49	6.3	150	250	4.13
14 x 50	17	48	6.3	150	250	4
15 x 46	20	52	7	168	280	5.17
16 x 48	20	56	8	192	320	5.63
16 x 49	24.5	59.5	8	192	320	5.71
16 x 64	23.9	58.9	8	192	320	5.11
18 x 54	23	63	10	246	410	6.85
18 x 64	21	60	10	246	410	6.6
19 x 57	23.7	63.2	11.3	270	450	7.7
20 x 60	25	70	12.5	300	500	8.6
22 x 65	28	74.2	15.3	366	610	10.7
22 x 66	28	77	15.3	366	610	10.2
22 x 86	26	74	15.3	366	610	9.5
24 x 72	32	82	18	432	720	12.78
24 x 86	28	79	18	432	720	11.6
26 x 78	35	91	21.3	510	850	14.87
26 x 92	30	86	21.3	510	850	13.7
30 x 90	38	105	28.3	678	1130	19.6
30 x 108	34	98	28.3	678	1130	18
32 x 96	40	106	32.2	772	1286	22.29
34 x 126	38	109	36.3	870	1450	22.7
34 x 102	46.5	121.5	36.3	870	1450	25.5
36 x 108	49.5	128.5	40.7	978	1630	31
38 x 137	42	121	45.3	1086	1810	29
38 x 114	52	136	45.3	1086	1810	32
40 x 120	54	144	50.2	1155	2010	35.2
42 x 126	55.5	144.5	55.4	1332	2200	38.6

Work Load Limit (WLL) is the maximum load which the chains are designed to sustain in lifting use. The mean stress at this load is 200N/MM² (MPA) and is based on a 4:1 factor of safety.
Manufacturing Proof Force (MPF) is the force to which during manufacture the chain is subjected to. The mean stress at this load is 500N/MM² (MPA) which is 2.5 times the working load limit.
Minimum Breaking Load (MBL) is the minimum force of which the chain must withstand before failure. The mean stress at this load is 800N/MM² (MPA). The minimum elongation before failure is 20%.

Standards

！This product can be used for Overhead Lfting. It is strictly prohibited to use it in excess of the working load (WLL).

！Any surface coating will affect the mechanical properties of the chain.Please ask staff for details.

We follow standards：

EN 818-1

EN 818-2

NACM2010

ASTM

Optional surface treatment: natural black, powder coating, black electrophoresis, electro-galvanizing, hot-dip galvanizing, Dacromet.

Chain lifted loads should never be transported or suspended over people.

Chain should be inspected every six months for cracks, gouges, wear, elongation, nicks, and suitability.

Chain performance can be effected by excessive temperatures or exposure to chemically active environments such as acids, corrosive liquids or fumes.

When mixing chain and components such as hooks and links, all should be rated at the work load limit of the lowest rated component or chain.

Ambient temperature during use:

Min.: -40 ℃

Max.: 200 ℃

If the application scenario exceeds or is lower than the recommended operating temperature, please consult the staff to see if it is feasible.

Q & A

What is the safety factor of Grade 80 chain?: 4:1. Of course in some cases you may need 6:1 or 8:1, if you are not sure, please contact our sales staff.

What grade chain is the strongest?: The strongest chain grade at present is Grade 120. The mainstream chain grades in the market are Grade 100 and Grade 80. In general, Grade 80 chain can meet normal use.

How can I be sure your chain slings are safe?: Each chain sling we produce has a unique code. We can trace it back to the raw materials based on this code. We ensure that each chain sling is verified to 2.5 times the safe working load before leaving the factory. We ensure that each batch of chain slings is tested to 4 times the safe working load (breaking load test) before leaving the factory.

What is the difference between grade 100 and grade 80 chain slings? Which one should I choose?: Grade 100 chain slings have better performance than grade 80 chain slings. Of course, the price is definitely higher. Under the same working load, grade 100 chain slings are 25~35% lighter than grade 80 chain slings. They are also more resistant to extreme temperatures and have higher elongation.

Grade 80 Chain

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