Steels_ Metallurgy and Applications, Third Edition

Table 1.3 BS EN 10130: 1991 Cold-rolled carbon steel fit products for cold forming

Graak Defiition Lkoxiaktion Validityof Slufacc Absenceof & Rm Am ’90 ng0 Chemical composition

and n~chmical qparme stretcher N/W~ ~mm2 1min.3 mia4.5 min.4 (ladle analysis I mu.)

ckus$cahn pIVprtiGS’ Snain

acconiing ma& C P SMnR

to EN 10020

Fe POI6 Non-alloy Manufacturer’s - A - -/2808*’O 27Q1410 28 0.12 0,045 0,045 0.60
quality dimetion - B 3 months

FeW3 Nondoy Fullykilled 6 months A 6months -& 270/370 34 173 0.10 0,035 0.035 0.45

Fe PO4 Non-aUoy FuUy killed^6 months A 6months -Dl08^2701350 38 1.6 0,180 0,oS 0,030 0,030 0,40

FeW5 Non-alloy FuUykilled 6months A 6months 41808 2701330 40 1.9 0.200 0.06 0,025 0,025 0.35

quality 6 months B 6 months

quality^6 months B 6 months

quality steel’^6 months B 6 months

-e.4,5 5 b.4

FeFQ6 Alloyquality Fullykilled 6months A nolimit 41809 270/350 38 1.8 0,220 0.02 0,020 0,020 0,2511 0.3
steel 6 months B no limit

Notes:
1 The mechanical properties apply only to
skin-passcd products.
2 The values of yield stress are the 0.2%
proof stress for products which do not
present a delinite yield point and the
lower yield stress for the others.
When the thickness is less than or equal
value for yield stress is increased by
20 N/mm2. For thickness less chan or
equal to 0.5 mm the value is increased
by 40 N/mm2.

3 When the thickness is less than or

equal to 0.7 mm and greater than

0.5 mm the minimum value for

elongation is reduced by 2 units. For

thickness less than or equal to

0.5 mm the minimum value is

reduced by 4 units.

(see annexes A and B) only apply to

products of thickness equal to or

greaterthan05mm.

5 When the thickness is over 2 mm the

value for ’90 or i is reduced by 0.2.

6 It is recommended that products in

grade Fe PO1 should be formed

within 6 web from the time of their

availability.

7 Unlessotherwiseagreedatthetime

of the enquiry and order Fe POI.

Fe PO3, Fe Po4 and Fe W5 may be

with boron or titanium).

8 For design purposes the lower limit of

& for grade Fe Pol, Fe W3, Fe FQ4

and Fe PO5 may be assumed to be

140 N/mm2.

9 For design purposes the lower limit of

Re for grade Fe PO6 may be assumed to

be 120 N/mm2.

10 The upper limit of & of 280 N/mm2

for grade Fe PO1 is valid only for

8 days from the time of the availability

of the product

Carbon and nitrogen shall be

completely

t00.7 mm and greater than 0.5 mmthe 4 The values of rm and “90 or fand ii supplied as alloy steels (for example I I atani~ may be replaced by niobium.

After BS EN 10130 1991.