All-Steel Laboratory Bench
Product Overview
Features & Specifications
Detailed Description
The value of an all-steel bench is that it does not mind water
An all-steel bench costs more than a steel-wood bench, and the difference is mostly in the cabinets: steel sheet has to be punched, folded, welded, pretreated and coated, far more process than cutting and edge-banding board for wooden cabinets. What the extra cost buys is not "more load capacity" — both rely on the steel frame for load — but cabinets that do not absorb water and swell. Whether it is worth it depends on three conditions: how many sinks there are, how well humidity is controlled, and how often the bench is wiped with disinfectant. If two of the three are on the high side, the service life of all-steel pulls clearly ahead of steel-wood; conversely, in a dry teaching laboratory that is cleaned infrequently, steel-wood offers better value.Rust protection depends on an intact coating
The base material of an all-steel bench is cold-rolled carbon steel, which rusts by itself; rust protection relies entirely on the pretreatment and powder coating. Degreasing and pickling remove oil and mill scale, and phosphating forms a phosphate layer on the steel surface so the powder coating grips more firmly; after high-temperature curing, the epoxy powder forms a continuous, chemical-resistant protective layer. So what an all-steel bench has to fear is not water but scratches that reach the bare steel. Once the coating is broken and the steel is exposed, rust spreads from the break underneath the coating. In daily use, avoid scraping cabinet surfaces other than the worktop with metal spatulas; when a break is found, seal it as soon as possible with matching touch-up paint.Which tests SEFA 8-M specifies
SEFA 8-M is the metal laboratory casework standard of the US Scientific Equipment and Furniture Association. The table below lists the main test items in the 2020 edition and can serve as a checklist for comparing supplier quality — when requesting a quotation, you can ask suppliers for test reports based on these items.| Test item | SEFA 8-M requirement (2020 edition) |
|---|---|
| Base cabinet overall load | 2000 lb (approx. 907 kg) distributed evenly on the cabinet top, 10 minutes |
| Door hinge | Door open at 90°, 200 lb (approx. 91 kg) hung 12 in from the hinge |
| Shelf load | 40 lb/ft², deflection not exceeding 1/180 of the span |
| Drawer durability | 50,000 open-close cycles under load |
| Door durability | 100,000 open-close cycles |
| Coating chemical resistance | 49 reagents spot-tested for 1 hour; no more than 4 may reach the most severe grade 3 |
| Coating hot water resistance | 88–96°C hot water poured over for 5 minutes; no visible effect |
| Coating impact resistance | 1 lb steel ball dropped from 12 in; coating must not crack |
| Coating adhesion and hardness | Cross-hatch adhesion ≥ 4B (ASTM D3359), pencil hardness 4H (ASTM D3363) |
Floor-standing or suspended
Floor-standing: the cabinets stand directly on the floor with a toe kick at the base; the construction is simple and the cabinet interior is unbroken, suiting wall benches and areas with large storage needs. C-frame suspended: the cabinets hang beneath the steel frame, can be repositioned and leave knee space, and the floor is easy to clean, suiting island benches whose layout is often changed. Both can be combined with reagent shelves, wall cabinets and sink sections.Applications
Hospital clinical laboratories, pharmaceutical and food QC rooms, environmental testing, chemical analysis, water quality testing and other laboratories with higher humidity or frequent cleaning. Where large amounts of strong acids or hydrofluoric acid (HF) are used, or acid fumes are generated, the coating on carbon steel will still be attacked over time, and a PP bench is recommended; where repeated high-temperature disinfection or aseptic work is required, choose a stainless steel bench.Frequently Asked Questions
Will an all-steel laboratory bench rust if its coating is scratched?
Yes. The base material of an all-steel bench is cold-rolled carbon steel, and rust protection relies entirely on the epoxy powder coating on the surface; once a scratch is deep enough to expose the steel, rust spreads from the break underneath the coating. Clean the break promptly and seal it with matching touch-up paint; when moving instruments, avoid dragging metal bases directly across cabinet surfaces. If the environment often has acid fumes, or knocks to the cabinets are unavoidable, consider stainless steel or PP cabinets instead, since they have no coating to scratch off.
All-steel and stainless steel laboratory benches are both steel — what is the difference?
An all-steel bench is "carbon steel plus coating", and its corrosion resistance comes from the powder coating on the surface; a stainless steel bench is made of 304 or 316 stainless steel, whose corrosion resistance comes from the material itself, so no coating is needed and scratches do not lead to rust. Stainless steel benches therefore suit aseptic and biological laboratories that are cleaned repeatedly with disinfectant, hot water or steam, and they cost noticeably more; for general chemistry, QC and testing laboratories, an all-steel bench is sufficient.
What should I look at when comparing all-steel laboratory benches from different suppliers?
First check the steel sheet thickness (1.0 / 1.2 mm is common for cabinets) and the pretreatment process, then the coating: a sample panel that cannot be scratched off with a fingernail or coin and has a smooth surface without orange peel is the basic requirement. A more objective method is to ask for test reports based on SEFA 8-M items, such as base cabinet overall load 2000 lb, door hinge 200 lb, coating spot test with 49 reagents and cross-hatch adhesion ≥ 4B. Also check the brands and load ratings of the door hinges and drawer slides — this hardware is the first part to fail in actual use.
Selection References
Before ordering, verify the efficiency grade, media type, and whether the operating environment fits your requirements.
