Specification Document No. B8A3 I Issue No. m

General Eiectdc Company .) .\ ’ ‘

,*,..

. Orders and Correspondence Must

Specily Complete Material Number

‘

.

Sheet, Hot-Roiled Low-Carbon Steel ~

GE Material B8A3 identifies hot-rolled, low-carbon steel sheet, coils and cut lengths, as follows: “

I

B8A3A B8A3A2 08A3A4 B8A3A5 B8A3A6

Qualihr Commercial Commercial Commercial Commercial Commercial

08A3A7 Commercial 0.15 max carbon B8A3A8 Commercial 0.15 max carbon B8A3A9 Commercial 0.15 max carbon B8A3AlO Commercial 0.15 max carbon B8A3All Commercial B8A3A22 Commercial B8A3A77 Commercial 0.15 max carbon B8A3A88 Commercial 0.15 max carbon B8A3B Commercial B8A3Bll Commercial B8A3N Drawing B8A3N2 Drawing B8A3N3 Drawing B8A3N4 Drawing B8A3N5 Drawing B8A3N6 Drawing B8A3Nll Drawing B8A3N22 Drawing B8A3N33 Drawing B8A3R Special for forming B8A3R2 Special for forming B8A3Rll Special for forming B8A3R22 Special for forming, B8A3X Commercial 08A3X4 Commercial B8A3X5 Commercial B8A3X6 Commercial BBASXl 1 Commercial B8A3X55 Commercial B8A3Y Scrap

Eioidl Pickled, oiled Pickled, not oiled , Pickled, oiled Pickled, not oiled Pickled and oiled “

Aim

to

”

roughness and hardness

Pickled, oiled Pickled, not oiled Pickled, oiled Pickled, not oiled Pickled, oiled Pickled, not oiled Pickled, oiled Pickled, not oiled Stretcher leveled, resquared, not oiled Stretcher leveled, resquared, not oiled Pickled, oiled ’ Pickled, not oiled As rolled, not oiled ’ Pickled, oiled Pickled, not oiled As rolled, not oiled Pickled, oiled Pickled, not oiled As rolled, not oiled . Pickled, oiled

Pickled, oiled As rolled, not oiled As rolled, not oiled As rolled, oiled As rolled, oiled As rolled, not oiled As rolled, oiled

2 ‘

,.

. /, - cut .

’

Mill Mill .

’

Mill

cut cut Mill Mill cut cut cut cut cut cut cut cut cut Mill Mill Mill cut cut cut : . . . cut Mill cut

’ Mill .

’

cut cut ., _. .

. B8A3A7, A8, A9, All other (

’

’ “’ AlO. A77. A88 F?@c

0.15 0.12 0.60 max 0.25-0.60 0.035 0.040 0.040 0.050

CHEMICAL COMPOSITION: % (Heat analysis)

Carbon, max ................................................................................................... Manganese (1) ............................................................................................... Phosphorus, max ........................................................................................... Sulfur, max .....................................................................................................

(1) 0.20.0.50% manganese for B8A3N, N2, N3, N4, N5, N6, Nl 1, N22, and N33.

Upon written approval by the purchaser, the chemical requirements of B8A3 may be modified in accordance with the requirements of GE Material Specification 68A67 similar to UNS G10080 (AISI 1008). The specified chemistry is as follows: 0.10 max carbon, 0.50 max manganese, 0.040 max phosphorus, 0.050 max sulfur.

The heat analysis (formerly ladle analysis) made by the manufacturer to determine the percentage of elements required under this specification shall be reported to the purchaser or his representative in a certificate of test when required on purchase order or otherwise.

A product analysis (formerly check analysis) may be made by the purchaser from a sample representing each melt. The chemical composition thus determined shall conform to the requirements of thls specification within the AISI permissible variation for product analysis.

(Contiqued on page 2)

BS March 31, 1996 * Supersedes: 08A3-S20 CAGE IDENT NO. 09172

B8A3-S21 Page 2

Sheet, Hot-Rolled Low-Carbon Steel MECHANICAL PROPERTIES:

Bend test - Material shall be capable of being bent flat upon itself in any direction. It is not necessary for the producer to perform the test. If the purchaser elects to perform the test and there is a failure, the material is rejectable.

HRB, hardness, Rockwell B (“aim to”) (B8A3A6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-80

ADDITIONAL REQUIREMENTS: Imperfections - The material shall be free from injurious external and internal imperfections of a nature which will interfere

with the purpose for which it is intended. Cut edge - GE Materials B8A3A, A2, A7, A8, Al 1, A22, A77, A88, B, N, N2, N3, Nil, N22, N33, X, X5, Xl 1 and X55 shall be

furnished with a slit or sheared edge. Oiled -When oiled sheets are ordered, mill standard oiling may be furnished unless otherwise specified. Special for forming -When B8A3R, R2, Rl 1 or R22 is ordered, the manufacturer shall furnish material suitable for forming

parts shown on a drawing which shall be furnished with the order. If orders do not specify the drawing number, they should be questioned as being incomplete.

Surface roughness (“aim to”) microinches AA (B8A3A6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Thickness tolerances - Thickness tolerances required shall be specified on the purchase order, i.e., traditional or new

tolerances specified as minimum or nominal thickness (Applies to all material except B8A3A11, A22, A77, A88, El 1, Nl 1, N22, N33, Rl 1, R22, Xl 1, X55).

REFEREE METHODS: Chemical composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......... ASTM A751

TOLERANCES: Thickness: Traditional tolerances (old theoretical minimum weight thickness tolerances) (All material except B8A3A11, A22,

A77, A88, Bll, Nil, N22, N33, Rll, R22, Xl 1, X55) (2) (3)

Specified width, inch 0.180 to

Over To incl 0.230 excl

lncl 12 20 0.014 _ 20 40 0.016

40 48 0.018 48 60 60 72 72 - .

Specified minimum thickness, inch

Thickness tolerances over, inch, no tolerance under 0.014 0.012 0.012 0.010 0.014 0.014 0.012 0.010 0.016 0.014 0.012 0.012 0.016 0.014 0.014 0.012 0.016 0.016 0.014 0.014 0.016 0.016 .

(2) Thickness is measured at any point across the width not less than 3/8 inch from a cut edge and not less than 3/4 inch from a mill edge. The above table does not apply to the uncropped ends of mill edge coils.

(3) The specified thickness range captions noted above also apply when sheet is specified to a nominal thickness, and the above tolerances are divided by 2 and are plus or minus.

Thickness: (4) (5) Coils and cut length (2 to 12 inches in width) (B8A3A11, A22, A77, A88, Bl 1, Nil, N22, N33, Rl 1, R22, Xl 1, X55)

Thickness, inch

From To excl

0.082 0.057 0.057 0.039 0.039 0.020 0.020 0.014

Thickness tolerance, inch plus or minus

. 0.005 0.004 0.003 0.002

(4) Thickness is measured at any point across the width not less than 3/8 inch from an edge. (5) The specified thickness range captions given above also apply when strip is specified to a minimum thickness and

the above tolerances are doubled on the plus side and set to zero on the minus side.

-\

(Continued on page 3)

0 #J ^’ Specifkaiion General Electh Compeny BS March 3t;’ 1996

. . 08A3S21

Page 3

Sheet, Hot-Rolled Low-Carbon Steel . TOLERANCES: (Continued)

Thickness: New tolerances when thickness is specified as nominal. (6) (All material except BBA3A11, A22, A77, A88, 611, Nl 1, N22, N33, Ftl 1, Xl 1, X55)

Specified width, inches

_ 1 Over72. 1

Over 20 to 40 incl Over 40 to 48 incl Over 48 to 60 incl Over 60 to 72 incl.

Over 0.180 to 0.230 incl

Specified nominal thickness, inch Over 0.098 Over 0.071 Over 0.057 Over 0.051 Over 0.044

to 0.180 incl to 0.098 incl to 0.071 incl to 0.057 incl to 0.051 incl Thickness tolerances over and under, inch

&0.007 - I

fo.006 fo.006 I

fo.005 M.0045 fo.0046 HI.005 I fo.005 I fo.0045

- fo.006 a.006 ztO.005 fo.005 - ti.006 a.006 - -

l (6) Thickness is measured at any point across the width not less than 1.00 inch from AC edge. The above table does not apply to the uncropped ends of non-temper rolled coils.

Thickness: New tolerances when thickness is specified as minimum. (7) (All material except B8A3A11, A22, A77, A88, Bl 1, Nil, N22, N33, Rll, X11, X55)

Specified minimum thickness, inch Specified width, Over 0.180 Over 0.098 Over 0.071 Over 0.057 Over 0.051 Over 0.044

inches to 0.230 incl to 0.180 incl to 0.098 incl to 0.071 incl to 0.057 incl to 0.051 incl Thickness tolerances over, inch, no tolerance under

12 to 20 incl 0.010 0.010 0.009 0.009 0.008 0.008 . Over 20 to 40 incl 0.012 0.010 0.010 0.009 0.008 0.008 Over 40 to 48 incl 0.014 0.012 0.010 0.009 0.009 0.008 Over 48 to 60 incl - 0.012 0.010 0.010 0.009 s Over 60 to 72 incl - 0.012 0.012 0.010 0.010 - Over 72 - 0.012 0.012 e - -

l -. (7) Thickness is measured at any point across the width not less than 1 .OO inch from AC edge. The above table does not apply to the uncropped ends of non-temper rolled coils.

Width: (B8A3A4, A5, A6,.A9, AlO, N4, N5, N6, X4 and X6)

Specified width, Tolerances over inch specified width,

Over To incl no tolerance under, inch (8)

lncl 12 14 7116

14 17 :; ;;6 19 21 El

98 11116

24 26 1316 26 30 15116 30 50 1 l/8 ;: 78 s 1 1 718 l/2

(8) The above tolerances do not apply to the unwrapped ends of mill edge coils,

Width: (B8A3A, A2, A7, A8, B, N, N2, N3, X and X5)

Specified width, Tolerances over inch specified width,

Over To incl no tolerance under, inch (9)

E 30 48 3l16 l/6

48 ii l/4 60 Y16 80 - 3l8

(9) The above tolerances apply to thicknesses 0.230 inch and thinner. (Continued on page 4)

General Electric Compeny BS +March 31,1996

B8A3S21 Page 4

Sheet, Hot-Rolled Low-Carbon Steel TOLERANCES: (Continued)

Width: Slit width tolerances for coils and cut lengths (B8A3A11, A22, A77, A88, Bl 1, Nl 1, N22, N33, Rl 1, R22, Xl 1 and X55)

Width, inch Thickness,

2 to 6 Over Over

inch . incl 6 to 9 9to12 incl incl

From To incl Tolerance, plus or minus, inch 0.249 0.161 0.016 0.020 0.020 0.161 0.100 0.010 0.016 0.016 0.100 0.089 0.008 0.010 0.010 0.069 0.017 0.005 0.005 0.010

I 0.017 I - I 0.005 I 0.005 I 0.010 I

Length: (All material except B8A3A11, A22, A77, A88, B, Bl 1, Nl 1, N22, N33, Rl 1, R22, Xl 1, X55)

Sp&%dttngth, (~Tolerances over

I 30 I 60 I l/2 I 120 60 I 120 156 I 3/4 1

192 1 l/4 I 156 192 I 240 I 1 l/2 -..

Length: Cut lengths (2 to 12 inches in width not resquared) (B8A3A11, A22, A77, A88, Nil, N22, N33, Rl 1, R22, Xl 1, X55)

Specified length, inch

24 to 60 Over Over Specified width, inch incl 60to 120 120 to 240

incl incl Tolerances over specified length

plus tolerance only, inch 2to12incl l/2 I 3f4 I 1

0 86 Spec/fication

(Continued on page 5)

General Electric Compeny BS March 31.; 1996

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3

S h e e

t,

H o

t-

R & d

L o w - C a r b o n S

t

e e

l

B 8 A 3 S 2 1 P a g e 5

T O L E R A N C E S

:

(Cont inued) S

traightness:

Al l m a

terial

except B 8 A 3 B a n d Bl l (10) (11)

Cut length, feet C a m b e r to lerances, Ove r To incl inch

4 1 1 8

: 6 8 3 l16 1 1 4 8 1 0 Y 1 6

1 0 1 2 3

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8

I 1 2 I 1 4 I l/2 1 4 1 6 Y 8 1 6 1 8 Y 4 1 8 2 0 7 1 8 2 0 3 0 1 1 1 4 3 0 4 0 1 1 R

(10) T h e cambe r to le rance for coi ls is o n e inch in any 2 0 feet. (11) C a m b e r is the dev ia t ion of a s ide e d g e f rom a straight l ine, the measu remen t be ing taken o n the concave s ide with

a straight edge .

Flatness: Al l m a

terial

except B 8 A 3 B a n d 6 1 1

(12) M a x i m u m dev ia t ion f rom a hor izonta l flat surface. (13) The re a re n o estab l ished f latness to lerances for sheet wi th speci f ied m in imum yie ld po int in excess of 5 0 ksi. (14) To le rances to 4 5 ksi y ie ld s t rength exclus ive b a s e d u p o n A S T M A 5 6 8

.

(15) To le rances f rom 4 5 ksi th rough 5 0 ksi y ie ld s t rength inclusive a re genera l l y fo l lowed by producers .

Flatness: (Stretcher leve led)

Spec i f ied Flatness to lerances m in imum Spec i f ied Spec i f ied (max imum deviat ion)

thickness, width, length, f rom a hor izonta l inch inch inch flat surface,

Ove r lncl inch 0 .044 0 .180 To 4 8 incl To 9 6 incl 1 1 8

W

ider

o r l onger l/4 0 .180 0 .230 To 4 8 incl I To 9 6 incl 1 1 8

L o n g e r l/4

O u

t-of-square:

( B 8 A 3 A

,

A 2

,

A 7

,

A 8

,

All, A 2 2

,

A 7 7

,

A 8 8

,

B

,

Bll, N, N2, N3, Nil, N22, N33, X

,

X 5

,

X 1 1

,

X 5 5 ) (16)

t Thickness, inch I To lerance, inch

Al l s izes l /16 pe r 6 o r fract ion thereof of width i

(16) O u

t-of -square

is greatest dev ia t ion of a n e n d e d g e f rom a straight l ine at r ight ang le to a s ide a n d touch ing o n e corner . It is a lso ob ta ined by measu r i ng the d i f ference be tween the d iagona ls of the sheet. O u

t-of -square

dev ia t ion is one-ha l f of the di f ference.

0 % Spec i f ica t ion G e n e r a l Electr ic C o m p e n y B S i

Ma rch 31 ,1996

B8A3-S21 Page 6

Sheet, Hot-Rolled Low-Carbon Steel TOLERANCES: (Continued)

Width, length, camber, squareness: Stretcher leveled, resquared: (B8A3B and 011)

Dimensions, inch Width Length

Up to 48 incl Up to 120 incl Up to 48 incl Over 120 Over 48 Up to 120 incl Over 48 Over 120

Width 1116 l/8 l/8 118

Tolerance, plus only, inch Length Camber

l/l6 l/l6 l/8 l/8 l/8 l/8 l/8 118

Square l/18 118 118 l/8

CERTIFICATE OF TEST: When requested, the supplier shall submit promptly to the purchaser at the point of delivery a certificate of test showing the

results of tests for chemical analysis required by this specification. This certificate shall be addressed to the section, unit or person specified on the purchase order, and shall contain the GE designation, the purchase order number, and the quantity shipped so that the certificate may be identified with the shipment.

PACKING AND MARKING: All material shall be separated by size for shipment, and carefully packed in accordance with the latest practice of AISI to

avoid damage or loss during shipment. When lift size is not specified on the purchase order, standard AISI lijt will be acceptable.

Each shipment shall be legibly marked with the purchase order number, the weight, the manufacturer’s name and the GE designation.

0 ;4t Specification General Electric Company BS March 31 ;‘1996