Steel Suppliers and stockholders - Steel Express

EN3B Steel

EN3B, also known as 070m20, available in rounds, flats, squares & hexagons. En3b is a mild steel suitable for welding and general machining. AISI 1020

  • Material available ex stock, delivered nationwide next day.
  • En3B mild steel can be cut, drilled or fabricated to your requirements.

EN3 steel forgings »

BS 970 1991 BS 970 1955 EN AISI/SAE Werkstoff
070M20 EN3B 1020 1.0402

 

Popular size ranges shown below, other sizes available upon request .

Specification BS 970: 1955 EN3B steel Chemical Composition BS 970:1991/1983 Nearest Equivalent
C Si Mn Ni Cr Mo S P
% % % % % % % %
En3B 0.25 Max 0.35 Max 1.0 Max - - - 0.06 Max 0.06 Max 070m20
080m15

En3B Rounds Turned | Rounds Hot Rolled| Hexagons | Squares | Flats

En3B Mild Steel Rounds Bright Drawn/Turned

Size
(inches)
1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16
1 1 1/16 1 1/8 1 3/16 1 1/4 1 5/16 1 3/8 1 7/16 1 1/2 1 5/8 1 3/4 1 7/8 2 2 1/8
2 1/4 2 3/8 2 1/2 2 5/8 2 3/4 2 7/8 3 3 1/8 3 1/4 3 3/8 3 1/2 3 5/8 3 3/4 4
4 1/4 4 1/2 4 3/4 5 5 1/4 5 1/2 5 3/4 6 6 1/4 6 1/2 6 3/4 7 7 1/2 8
8 1/2 9 9 1/2 10 10 1/2 11 12
Size
(mm)
3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 22 24 25 26 28 30 32 35 36 38
40 42 45 48 50 52 55 56 60 65 70 75 80 85
90 100 105 110 115 120 125 130 140 150 160 180 200

En3B Rounds Hot Rolled

Size (mm) 40 45 50 55 60 65 70 75 80 85 90 95 100 105
110 115 120 125 130 140 145 150 155 160 165 170 180 190
200 210 220 240 250 260 280 300

En3B Hexagons Bright Drawn Stock Size Range

Size
(inches A/F)
0.445 0.562 0.687 0.750 0.812 0.820 0.875 0.920 0.937 1.000 1.100 1.125 1.200 1.250
1.300 1.500 1.670 1.860 1.875 2.000 2.220 2.410 3.150 3.550

En3B Squares Bright Drawn

Size (inches) 3/16 1/4 5/16 3/8 7/16 1/2 5/8 11/16 3/4 7/8 1 1 1/8 1 1/4 1 1/2
1 3/4 2 2 1/4 2 1/2 2 3/4 3 3 1/2 4 4 1/2 5 5 1/2 6
Size (mm) 4 6 8 10 12 13 14 15 16 18 20 22 25 30
32 35 40 45 50 55 60 65 70 75 80 90 100

En3B Mild Steel Flats Bright Drawn / Cold Rolled

Size (inches)
1/4 x 1/8 1 x 1/16 1 1/2 x 1/8 2 1/4 x 1/8 3 x 3/4 5 x 1/4 8 x 1/4
3/8 x 1/16 1 x 3/32 1 1/2 x 3/16 2 1/4 x 3/16 3 x 7/8 5 x 5/16 8 x 5/16
3/8 x 1/8 1 x 1/8 1 1/2 x 1/4 2 1/4 x 1/4 3 x 1 5 x 3/8 8 x 3/8
3/8 x 3/16 1 x 3/16 1 1/2 x 5/16 2 1/4 x 3/8 3 x 1 1/4 5 x 1/2 8 x 1/2
3/8 x 1/4 1 x 1/4 1 1/2 x 3/8 2 1/4 x 1/2 3 x 1 1/2 5 x 5/8 8 x 5/8
  1 x 5/16 1 1/2 x 1/2 2 1/4 x 5/8 3 x 1 3/4 5 x 3/4 8 x 3/4
1/2 x 1/16 1 x 3/8 1 1/2 x 5/8 2 1/4 x 3/4 3 x 2 5 x 1 8 x 1
1/2 x 1/8 1 x 7/16 1 1/2 x 3/4 2 1/4 x 1 3 x 2 1/2 5 x 1 1/4 8 x 1 1/4
1/2 x 3/16 1 x 1/2 1 1/2 x 7/8 2 1/4 x 1 1/4   5 x 1 1/2 8 x 1 1/2
1/2 x 1/4 1 x 5/8 1 1/2 x 1 2 1/4 x 1 1/2 3 1/2 x 1/4 5 x 2 8 x 2
1/2 x 5/16 1 x 3/4 1 1/2 x 1 1/4   3 1/2 x 3/8 5 x 2 1/2  
1/2 x 3/8 1 x 7/8   2 1/2 x 1/8 3 1/2 x 1/2 5 x 3 9 x 3/8
    1 3/4 x 1/8 2 1/2 x 3/16 3 1/2 x 5/8 5 x 3 1/2 9 x 1/2
5/8 x 1/16 1 1/8 x 1/8 1 3/4 x 3/16 2 1/2 x 1/4 3 1/2 x 3/4   9 x 3/4
5/8 x 1/8 1 1/8 x 3/16 1 3/4 x 1/4 2 1/2 x 5/16 3 1/2 x 1 6 x 1/8  
5/8 x 3/16 1 1/8 x 5/16 1 3/4 x 5/16 2 1/2 x 3/8 3 1/2 x 2 6 x 3/16 10 x 1/4
5/8 x 1/4 1 1/8 x 3/8 1 3/4 x 3/8 2 1/2 x 1/2   6 x 1/4 10 x 5/16
5/8 x 5/16 1 1/8 x 1/2 1 3/4 x 1/2 2 1/2 x 5/8 4 x 1/8 6 x 5/16 10 x 3/8
5/8 x 3/8 1 1/8 x 5/8 1 3/4 x 5/8 2 1/2 x 3/4 4 x 3/16 6 x 3/8 10 x 1/2
5/8 x 1/2 1 1/8 x 3/4 1 3/4 x 3/4 2 1/2 x 1 4 x 1/4 6 x 1/2 10 x 5/8
  1 1/8 x 1 1 3/4 x 1 2 1/2 x 1 1/4 4 x 5/16 6 x 5/8 10 x 3/4
3/4 x 1/16   1 3/4 x 1 1/4 2 1/2 x 1 1/2 4 x 3/8 6 x 3/4 10 x 1
3/4 x 3/32 1 1/4 x 1/8 1 3/4 x 1 1/2 2 1/2 x 1 3/4 4 x 1/2 6 x 1 10 x 1 1/4
3/4 x 1/8 1 1/4 x 3/16   2 1/2 x 2 4 x 5/8 6 x 1 1/4 10 x 1 1/2
3/4 x 3/16 1 1/4 x 1/4 2 x 1/8   4 x 3/4 6 x 1 1/2 10 x 2
3/4 x 1/4 1 1/4 x 5/16 2 x 3/16 2 3/4 x 1/4 4 x 7/8 6 x 1 3/4  
3/4 x 5/16 1 1/4 x 3/8 2 x 1/4 2 3/4 x 1/2 4 x 1 6 x 2 12 x 1/4
3/4 x 3/8 1 1/4 x 1/2 2 x 5/16 2 3/4 x 3/4 4 x 1 1/4 6 x 2 1/2 12 x 3/8
3/4 x 1/2 1 1/4 x 5/8 2 x 3/8 2 3/4 x 1 4 x 1 1/2 6 x 3 12 x 1/2
3/4 x 5/8 1 1/4 x 3/4 2 x 1/2 2 3/4 x 1 1/4 4 x 1 3/4 6x 4 12 x 5/8
  1 1/4 x 7/8 2 x 5/8 2 3/4 x 1 1/2 4 x 2   12 x 3/4
7/8 x 1/8 1 1/4 x 1 2 x 3/4   4 x 2 1/2 7 x 1/4 12 x 1
7/8 x 3/16   2 x 7/8 3 x 1/8 4 x 3 7 x 3/8 12 x 1 1/4
7/8 x 1/4 1 3/8 x 1/4 2 x 1 3 x 3/16   7 x 1/2 12 x 2
7/8 x 5/16 1 3/8 x 3/8 2 x 1 1/4 3 x 1/4 4 1/2 x 1/4 7 x 3/4  
7/8 x 3/8 1 3/8 x 1/2 2 x 1 1/2 3 x 5/16 4 1/2 x 3/8 7 x 1  
7/8 x 1/2 1 3/8 x 1 2 x 1 3/4 3 x 3/8 4 1/2 x 1/2    
7/8 x 5/8     3 x 1/2 4 1/2 x 5/8    
7/8 x 3/4     3 x 5/8 4 1/2 x 3/4    
        4 1/2 x 1    

Size (mm)
10 x 2 25 x 2 35 x 6 50 x 3 65 x 6 80 x 3 110 x 10 150 x 10
10 x 3 25 x 3 35 x 8 50 x 5 65 x 10 80 x 6 110 x 12 150 x 12
10 x 5 25 x 4 35 x 10 50 x 6 65 x 12 80 x 10 110 x 16 150 x 16
10 x 6 25 x 5 35 x 16 50 x 8 65 x 16 80 x 12 110 x 20 150 x 20
  25 x 6 35 x 20 50 x 10 65 x 20 80 x 16 110 x 25 150 x 25
12 x 3 25 x 8 35 x 25 50 x 12 65 x 25 80 x 20 110 x 30 150 x 30
12 x 5 25 x 10 35 x 30 50 x 16 65 x 30 80 x 25 110 x 40  
12 x 6 25 x 12   50 x 20 65 x 40 80 x 30 110 x 50 160 x 6
12 x 10 25 x 16 40 x 3 50 x 25 65 x 50 80 x 40   160 x 10
  25 x 20 40 x 5 50 x 30   80 x 50 125 x 6 160 x 12
15 x 3   40 x 6 50 x 35 70 x 6   125 x 8 160 x 16
15 x 4 30 x 3 40 x 8 50 x 40 70 x 10 90 x 6 125 x 10 160 x 20
15 x 5 30 x 4 40 x 10   70 x 12 90 x 10 125 x 12 160 x 25
15 x 6 30 x 5 40 x 12 55 x 6 70 x 16 90 x 12 125 x 16 160 x 30
15 x 8 30 x 6 40 x 16 55 x 10 70 x 20 90 x 16 125 x 20 160 x 40
15 x 10 30 x 8 40 x 20 55 x 12 70 x 25 90 x 20 125 x 25 160 x 50
  30 x 10 40 x 25 55 x 16 70 x 30 90 x 25 125 x 30  
16 x 3 30 x 12 40 x 30 55 x 20 70 x 35 90 x 30 125 x 40 200 x 10
16 x 5 30 x 16   55 x 25 70 x 40 90 x 40 125 x 50 200 x 12
16 x 6 30 x 20 45 x 5 55 x 30 70 x 50 90 x 50   200 x 20
16 x 10 30 x 25 45 x 6 55 x 40     130 x 10 200 x 25
16 x 12   45 x 8   75 x 6 100 x 5 130 x 16  
  32 x 6 45 x 10 60 x 6 75 x 8 100 x 6 130 x 20  
20 x 1.5 32 x 10 45 x 12 60 x 8 75 x 10 100 x 10 130 x 25  
20 x 2 32 x 12 45 x 16 60 x 10 75 x 12 100 x 12    
20 x 3 32 x 16 45 x 20 60 x 12 75 x 16 100 x 16 140 x 6  
20 x 4 32 x 20 45 x 25 60 x 16 75 x 20 100 x 20 140 x 10  
20 x 5 32 x 25 45 x 30 60 x 20 75 x 25 100 x 25 140 x 12  
20 x 6   45 x 35 60 x 25 75 x 35 100 x 30    
20 x 8   45 x 40 60 x 30 75 x 40 100 x 40    
20 x 10     60 x 40   100 x 50    
20 x 12         100 x 65    
20 x 16              

Click here for Steel hardness conversion charts and heat treatment hardness tables

Steel Weight Calculator >>

Other engineering steel grades: En1A, En3B, En8, En9, En14, En16, En19, En24, EN24T, En36

Tool Steel

01

A2

D2

D2 Supreme™

D3

H13

M42

M2

P20

• 1.2316

Engineering Steel

EN1A

EN1A LD

EN3B

EN8

EN9

EN14

EN16

EN19

EN24/EN24T

EN36

Alloy24™

Structural Steel

Angles

RHS

CHS

Seamless Tubes

ERW

Flats

Squares

Sheets

Universal Beams

Universal Columns

Channels

T sections

Rounds

Stainless Steel

303

304

316

410

17-4PH

Stainless Steel Sheet

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Stainless Steel Tube

Cast Iron

Grey cast iron

SG iron

Steel Express

Based in Wolverhampton, West Midlands, Steel Express are steel suppliers and stockholders. Stock is delivered on our own fleet of vehicles locally and nationally quickly and efficiently on the day we say we will.

We also provide a free issue cutting service, press braking, fabrication and forging.

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