Stainless Steel

Round, hexagon, square, flat and angle, in the grades and finishes that machine and fabricate best.

If you machine, forge or fabricate stainless bar, you want three things: the right grade, the right size and a quick turnaround.

That's what our stainless bar service is built to deliver.

Grades held in stock

1.4305 (303)

Free-machining austenitic. Sulphur-added for better chip-breaking and faster machining speeds. The default for precision engineering, repetition turning and CNC work where machinability matters more than weldability.

1.4301/1.4307 (304/304L)

Standard austenitic. Excellent corrosion resistance, formability and weldability. The general-purpose choice for fabrication and structural work.

1.4401/1.4404 (316/316L)

Molybdenum-added austenitic. Better chloride and pitting resistance. The choice for marine, chemical, pharmaceutical and food-grade applications.

Duplex, super duplex and specialist alloys available to order through our Bespoke Materials service.

Forms we hold

Round bar in metric and imperial diameters. Bright drawn from 3mm and 1/8" to 25mm and 1". Smooth turned or bright ground from 25mm and 1" to 60mm and 3". Rough turned to 16" in austenitic grades.
Hexagon bar from 0.3125" to 2.5" in 303 and 316/316L
Square bar in metric sizes from 12x12mm to 50x50mm in 304/304L and 316/316L
Flat bar in metric sizes from 20x10mm to 100x25mm in 304/304L and 316/316L
Rolled edge flat bar from 12x3mm to 100x12mm in 304/304L and 316/316L, with non-standard widths available on short lead times
Angle in metric sizes from 20x20x3mm to 100x100x10mm in 304/304L and 316/316L, with other sizes fabricated on short lead times

Our cut-to-size service

Bar sawing on-site at every Service Centre
Single cut lengths through to high-volume repetition cuts
Quick lead times
Competitive pricing
No minimum order quantity

Why precision engineers use Aalco for stainless steel bar

Wide grade and form range, ready to ship
Free-machining 1.4305 alongside standard austenitic grades
On-site sawing capacity for repetition work
No minimum order quantity. Order what you need, when you need it
Same supplier for the rest of your bar requirements (aluminium, copper alloys, specialist alloys)
Certification to BS EN 10204 3.1 as standard

For duplex, super duplex and high-nickel alloys, see our Bespoke Materials page. For plate and structural sections, see our Stainless Steel Plate page.