The H-Lift Grade 43 High Test Chain is a durable carbon steel welded chain manufactured to ASTM A413/A413M-21 standards, designed specifically for load binding, towing, and logging applications.
Often referred to as "High-Test Chain," it offers a higher strength-to-weight ratio than standard Grade 30 proof coil chain for more demanding securement tasks.
Constructed from carbon steel and subjected to strict mechanical testing for proof force, breaking force, and elongation to ensure reliable performance.
Highly versatile for a wide range of industrial applications, including bundling, trucking tie-downs, container securement, and railroad cars.
Strictly intended for static loads, general utility, and load binding; it is not approved, recommended, or rated for overhead lifting operations.
The Grade 43 High Test Chain is a premium welded carbon steel chain designed to bridge the gap between standard proof coil and high-strength transport chains. Extensively used in applications where proof coil isn't strong enough but Grade 70 isn't required, it is the ideal solution for heavy truck and trailer tie-downs, logging chokers, farm machinery, and construction equipment securement.
⚠️ SAFETY WARNING: NOT FOR OVERHEAD LIFTING. This chain is designed strictly for pulling, binding, and securement. Despite its high tensile strength, it is strictly NOT approved or calibrated for overhead lifting, hoists, or the suspension of loads.
✅ Standard Compliance
Manufactured and tested to perfectly align with the ASTM A413/A413M-21 specifications for carbon steel chains, ensuring reliable performance in commercial applications.
💪 Enhanced Strength
Forged from high-quality carbon steel. Grade 43 offers a significantly higher tensile strength and working load limit (WLL) than standard Grade 30 proof coil chain of the exact same diameter.
🛡️ Corrosion Protection
Available in a variety of industrial finishes including self-color, zinc-plated, and hot-dip galvanized, providing essential rust resistance for harsh outdoor and agricultural environments.
🛠️ Heavy-Duty Applications
Perfect for demanding tasks. Widely utilized for heavy equipment securement, logging, towing, and agricultural machinery where elevated strength is a strict requirement.
⚙️ Related Products & Alternatives:
• Higher Strength Alternative: Require DOT-compliant chain specifically for heavy over-the-road transport? View our Grade 70 Transport Chain. • Overhead Lifting: For any overhead lifting operations or hoists, you must use our certified Grade 80 Alloy Lifting Chain. • Hardware: Pair your high test chain with our durable compatible Commercial Shackles and Load Binders.
Technical Specifications
Refer to the table below for exact dimensional limits and load capacities.
← Swipe table left and right to view all data →
Item No.
Nominal Size
Working Load Limit (Max)
Proof Load (Min)
Breaking Load (Min)
Weight per 100'
Inside Length (Max)
Inside Width (Min)
Product Code
inch
mm
kg
lbs
kN
lbs
kN
lbs
kg
lbs
inch
mm
inch
mm
C804307
1/4
7.1
1,180
2,600
19.1
4,300
34.5
7,750
36.3
80
0.86
21.8
0.40
10.2
708006407
C804308
5/16
8.7
1,770
3,900
28.4
6,400
51.6
11,600
50.4
111
1.05
26.7
0.48
12.2
708006408
C804310
3/8
10.3
2,450
5,400
39.6
8,900
72.0
16,200
72.6
160
1.19
30.3
0.58
14.7
708006410
C804313
1/2
13.5
4,170
9,200
68.0
15,300
122.7
27,600
128.6
284
1.43
36.0
0.75
19.1
708006413
Q: What is the difference between Grade 30 and Grade 43 chain? [Image comparing material strength limits of Grade 30 vs Grade 43 carbon steel chain in a bar chart] A: Grade 43 (High Test) chain has a higher carbon content and is significantly stronger than Grade 30 (Proof Coil) chain. For example, a 3/8" Grade 43 chain has a Working Load Limit of 5,400 lbs, whereas a 3/8" Grade 30 chain is only rated for 2,800 lbs.
Q: Can I use Grade 43 High Test chain to lift an engine?A: No. While Grade 43 is strong enough for heavy tie-downs and logging, it is not heat-treated to absorb the dynamic shock loads of overhead lifting. For engine hoists or any suspended loads, you must use an alloy chain (Grade 80 or Grade 100).
Standard Specification for Carbon Steel Chain
Grades 30, 43, and 70 | Non-Overhead Lifting Applications
Abstract
This specification covers carbon steel chain for applications such as railroad cars, construction, industrial uses, load binding, and general purposes other than overhead lifting. The three classes of carbon steel chains covered include:
Grade 30: Proof Coil Chain
Grade 43: High Test Chain
Grade 70: Transport Chain
Dimensional requirements, mechanical testing (proof testing, breaking force, elongation), and testing frequency are defined herein.
1. Scope
1.1 This specification covers carbon steel chain for such applications as railroad cars, construction, industrial uses, load binding, and general purposes other than overhead lifting.
Note 1: This specification does not cover carbon steel chain for sprocket applications.
1.2 Three classes of carbon steel chain are covered:
1.2.1 Grade 30 — Proof coil chain.
1.2.2 Grade 43 — High test chain.
1.2.3 Grade 70 — Transport chain.
1.3 The chain grade is based on the nominal stress in the link at the design breaking force strength. It is calculated by taking the minimum breaking force load and dividing by two times the nominal cross-sectional area of the link.
1.4 The values stated in either SI units or in other units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.4.1 Metric Units Grade = 1/10 of the minimum breaking force (kN) / (2 × nominal cross-sectional area in mm²) Formula: (MBF) / (0.005 × π × d²)
1.4.2 English Units Grade = 0.000689 of the minimum breaking force (lb) / (2 × nominal cross-sectional area in in²) Formula: (0.000689 × MBF) / (0.5 × π × d²)
1.4.3 MBF = minimum breaking force (lb or kN); d = chain diameter (in. or mm).
Note 2: The above formulas are for round diameter links only. If different cross sections are used, the actual cross section of the link would need to be calculated and used.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Download
We use cookie to improve your online experience. By continuing browsing this website, we assume you agree to our use of cookie.
