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.

Grade CS4 mild steel is commonly supplied as material for shims.

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

PeriodDelivery

Symbol

Re

Rm

Elongation

Hardness HV

GuaranteedCondition N/mm2N/mm2% min A80 
3 monthsAnnealedA270-39028105 max 
 Skin passedLC280 max270-41028115 max 
 Work hardenedC290200-380290-4301895-125 
  C340250 min340-490105-155 
  C390310 min390-540117-172 
  C440360 min440-590135-185 
  C490420 min490-640155-200 
  C590520 min590-740185-225 
  C690630 min690 min215 min 
6 monthsAnnealedA270-37034100 max 
 Skin passedLC240 max270-37034110 max 
 Work hardenedC290210-355290-3902295-117Temper rolled H1
  C340240 min340-440105-130Temper rolled H2
  C390330 min390-490117-155 
  C440380 min440-540135-172Temper rolled H3
  C490440 min490-590155-185 
  C590540 min590 min185 min