VII-78 January 2005

Table 3-1RECOMMENDED MINIMUM BEND RADII FOR 90º COLD BENDS

OF SHEET AND PLATE ① ② ③ ④ ⑤

Alloy TemperRADII FOR VARIOUS THICKNESSES EXPRESSED IN TERMS OF THICKNESS “t”

1/64 in. 1/32 in. 1/16 in. 1/8 in. 3/16 in. ¼ in. 3/8 in. ½ in.

1100

OH12H14H16H18

00001t

000½t1t

0001t1½t

0½t1t1½t2½t

½t1t1t1½t3t

1t1t1½t2½t3½t

1t1½t2t3t4t

1½t2t2½t4t4½t

2014

OT3T4T6

01½t1½t3t

02½t2½t4t

03t3t4t

½t4t4t5t

1t5t5t6t

1t5t5t8t

2½t6t6t8½t

4t7t7t9½t

2024

OT3T361⑥ T4T81T861⑥

02½t3t2½t4½t5t

03t4t3t5½t6t

04t5t4t6t7t

½t5t6t5t7½t8½t

1t5t6t5t8t9½t

1t6t8t6t9t10t

2½t7t8½t7t10t11½t

4t7½t9½t7½t10½t11½t

2036 T4 . . 1t 1t . . . . . . . . . .

3003

OH12H14H16H18

000½t1t

0001t1½t

0001t2t

0½t1t1½t2½t

½t1t1t2½t3½t

1t1t1½t3t4½t

1t1½t2t3½t5½t

1½t2t2½t4t6½t

3004

OH32H34H36H38

0001t1t

001t1t1½t

0½t1t1½t2½t

½t1t1½t2½t3t

1t1t1½t3t4t

1t1½t2½t3½t5t

1t1½t2½t4t5½t

1½t2t3t4½t6½t

3105 H25 ½t ½t ½t . . . . . . . . . .

5005

OH12H14H16H18H32H34H36H38

000½t1t00½t1t

0001t1½t001t1½t

0001t2t001t2t

0½t1t1½t2½t½t1t1½t2½t

½t1t1½t2½t3½t1t1½t2½t3½t

1t1t1½t3t4½t1t1½t3t4½t

1t1½t2t3½t5½t1½t2t3½t5½t

1½t2t2½t4t6½t2t2½t4t6½t

5050

OH32H34H36H38

0001t1t

0001t1½t

001t1½t2½t

½t1t1½t2t3t

1t1t1½t2½t4t

1t1½t2t3t5t

1½t. .. .. .. .

1½t. .. .. .. .

5052

OH32H34H36H38

0001t1t

001t1t1½t

01t1½t1½t2½t

½t1½t2t2½t3t

1t1½t2t3t4t

1t1½t2½t3½t5t

1½t1½t2½t4t5½t

1½t2t3t4½t6½t

5083OH321

. .

. .. .. .

½t1t

1t1½t

1t1½t

1t1½t

1½t2t

1½t2½t

5086

OH32H34H36

00½t1½t

0½t1t2t

½t1t1½t2½t

1t1½t2t3t

1t1½t2½t3½t

1t2t3t4t

1½t2½t3½t4½t

1½t3t4t5t

5154

OH32H34H36H38

00½t1t1½t

0½t1t1½t2½t

½t1t1½t2t3t

1t1½t2t3t4t

1t1½t2½t3½t5t

1t2t3t4t5t

1½t2½t3½t4½t6½t

1½t3½t4t5t6½t

January 2005 VII-79

Table 3-1RECOMMENDED MINIMUM BEND RADII FOR 90º COLD BENDS

OF SHEET AND PLATE ① ② ③ ④ ⑤ (Continued)

Alloy TemperRADII FOR VARIOUS THICKNESSES EXPRESSED IN TERMS OF THICKNESS “t”

1/64 in. 1/32 in. 1/16 in. 1/8 in. 3/16 in. ¼ in. 3/8 in. ½ in.

5252H25H28

01t

01½t

1t2½t

2t3t

. .

. .. .. .

. .

. .. .. .

5254

OH32H34H36H38

00½t1t1½t

0½t1t1½t2½t

½t1t1½t2t3t

1t1½t2t3t4t

1t1½t2½t3½t5t

1t2t3t4t5t

1½t2½t3½t4½t6½t

1½t3½t4t5t6½t

5454OH32H34

0½t½t

½t½t1t

1t1t1½t

1t2t2t

1t2t2½t

1½t2½t3t

1½t3t3½t

2t4t4t

5456OH321

. .

. .. .. .

1t. .

1t2t

1½t2t

1½t2½t

2t3t

2t3½t

5457 O 0 0 0 . . . . . . . . . .

5652

OH32H34H36H38

0001t1t

001t1t1½t

01t1½t1½t2½t

½t1½t2t2½t3t

1t1½t2t3t4t

1t1½t2½t3½t5t

1½t1½t2½t4t52t

1½t2t3t4½t62t

5657H25H28

01t

01½t

02½t

1t3t

. .

. .. .. .

. .

. .. .. .

6061OT4T6

001t

001t

01t1½t

1t1½t2½t

1t2½t3t

1t3t3½t

1½t3½t4½t

2t4t5t

7050 T7 . . . . . . . . . . 8t 9t 9½t

7072OH14H18

001t

001t

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

. .

7075OT6

03t

04t

1t5t

1t6t

1½t6t

2½t8t

3½t9t

4t9½t

7178OT6

03t

04t

1t5t

1½t6t

1½t6t

2½t8t

3½t9t

4t9½t

① The radii listed are the minimum recommended for bending sheets and plates without fracturing in a standard press brake with air bend dies. Other types of bending operations may require larger radii or permit smaller radii. The minimum permissible radii will also vary with the design and condition of the tooling.

② Alclad sheet in the heat-treatable alloys can be bent over slightly smaller radii than the corresponding tempers of the bare alloy.

③ Heat-treatable alloys can be formed over appreciably smaller radii immediately after solution heat treatment.

④ The H112 temper (applicable to non-heat treatable alloys) is supplied in the as-fabricated condition without special property control but usually can be formed over radii applicable to the H14 (or H34) temper or smaller.

⑤ The reference test method is ASTM E290.

⑥ Tempers T361 and T861 formerly designated T36 and T86, respectively.

VII-80 January 2005

Table 3-2RECOMMENDED MINIMUM INSIDE RADII FOR 180º COLD BENDS, WIRE AND ROD*

Table 3-3SHEET THICKNESS FOR 180º COLD BENDING (METAL TO METAL)*

January 2005 VII-81

Tab

le 3

-4D

EV

ELO

PE

D L

EN

GT

H O

F M

AT

ER

IAL

FO

R 9

0º B

EN

DS

VII-82 January 2005

Tab

le 3

-4D

EV

ELO

PE

D L

EN

GT

H O

F M

AT

ER

IAL

FO

R 9

0º B

EN

DS

(C

on

tin

ued

)