Cold Rolled Mild Steel

The take-up of Euronorm steel standards is now being adopted more widely, facilitating steel supply throughout the EU. The main National Equivalents are illustrated in the chart below.

Euronorm

Germany

UK

Italy

USA

France NFA 36-401

EN 10139

DIN 1624

BS 1449

Uni 5866

ASTM

%C

%Mn

%Si

%S

%P

%Al

DC04

St4

CS1

FEP04

SAE 1006

.03 – .06

.18 – .40

.02 max

.02 max

.02 max

.02 max

DC04/DC03

St4/RRSt3

CS1/CS3

FEP04

SAE 1006

ES

.04 – .08

.40 max

.03 max

.02 max

.02 max

.02 max

DC01

St2

CS4

FEP01

SAE 1010

C

.08 – .13

.30 – .40

.03 max

.03 max

.03 max

.03 max

SAE 1018

.14 – .17

.60 – .80

.15 – .25

.02 max

.025 max

.025 max

 

EN 10139 : 1998 Mechanical Properties

Mechanical Properties

Period Delivery

Symbol

Re

Rm

Elongation

Hardness HV

Guaranteed Condition   N/mm2 N/mm2 % min A80  
3 months Annealed A 270-390 28 105 max
Skin passed LC 280 max 270-410 28 115 max
Work hardened C290 200-380 290-430 18 95-125
C340 250 min 340-490 105-155
C390 310 min 390-540 117-172
C440 360 min 440-590 135-185
C490 420 min 490-640 155-200
C590 520 min 590-740 185-225
C690 630 min 690 min 215 min
6 months Annealed A 270-370 34 100 max
Skin passed LC 240 max 270-370 34 110 max
Work hardened C290 210-355 290-390 22 95-117 Temper rolled H1
C340 240 min 340-440 105-130 Temper rolled H2
C390 330 min 390-490 117-155
C440 380 min 440-540 135-172 Temper rolled H3
C490 440 min 490-590 155-185
C590 540 min 590 min 185 min