Summary of Commonly Used Stainless Steel
Alloys and Bar Sizes

diameter (mm)	Stainless Steel Designation Numbers
	EN1.4301	EN1.4436	EN1.4462
3	*	*
4	*	*
5	*	*
6	*	*	*
8	*	*	*
10	*	*	*
12	*	*	*
14	*	*	*
16	*	*	*
20	*		*
25	*		*
32	*		*
40	*		*
50	*		*

Bars supplied conforming to BS6744:2001
All cut and bent rebar conforming to BS8666:2000

Nominal C/S Area and Nom. Mass/m

for typically specified Stainless Steel rebar (after BS6744:2001)

diameter (mm)	C/S Area (mm²)	Mass per meter (kg/m) Steel Designation No.
		EN1.4301	EN1.4436	EN1.4462
3	7.1	0.056	0.057	0.055
4	12.6	0.100	0.101	0.098
5	19.6	0.155	0.157	0.153
6	28.3	0.224	0.226	0.221
8	50.3	0.397	0.402	0.392
10	78.5	0.620	0.628	0.612
12	113.1	0.893	0.905	0.882
16	201.1	1.589	1.609	1.569
20	314.2	2.482	2.514	2.451
25	490.9	3.878	3.927	3.829	¹
32	804.2	6.353	6.434	6.273	¹
40	1256.6	9.927	10.053	9.801	¹
50	1963.5	15.512	15.702	15.315	¹

Note 1: These sizes are only produced to Grade 500

Tolerances on Kg/m

≥ 3 mm diameter& ≤ 6 mm diameter	+ / - 9.0% kg/m
≥ 7 mm diameter & ≤ 12 mm diameter	+ / - 6.0% kg/m
> 12 mm diameter	+ / - 4.5% kg/m

Tolerance on Bar Length

Unless otherwise specified: +100 / -0 mm on nominal length

Tensile Strength

Three Grades in British Standard:

• Grade 200 ²
• Grade 500
• Grade 650

Note 2: to be specified for plain bar only

Grade of tensile strength based on the following measures:

• 0.2% proof strength (R p0.2) in MPa or N/mm2
• stress ratio: Rm/R p0.2 (min.)
• elongation at fracture: A5 (min.)
• total elongation at maximum force, Agt (min.)