Chemical Composition

Mechanical Properties

Specification

Grade

C% max

Mn% max

P % max

S% max

Si% max

YS
Mpa Max

UTS
MPa

Elongation % min 5.65Ö S₀

Hardness
HRB

HR
max
30 T

IS 513/ 1994

O

0.15

0.60

0.055

0.055

D

0.12

0.50

0.040

0.040

250

270-410

23

65

60

DD

0.10

0.45

0.035

0.035

250

270-310

26

57

55

EDD

0.08

0.40

0.030

0.030

250

270-350

32

50

50

HSCR

26

0.08

0.05

0.025

0.025

0.03

260 min

350 min

26

35

0.12

1.10

0.025

0.025

0.05

350 min

430 min

22

Al 0.03-0.07% max for both grades, Nb 0.04% max for grade 26 and 0.05% for grade 35

Bend : Close for both grades

SAILCOR/ IRSM-41

0.10

0.25 - 0.45

0.75 - 0.140

0.030

0.28 - 0.72

460 min

22

Ni 0.28 - 0.49%, Cu 0.3 - 0.39%,
Cr 0.35 - 0.49%, Mo 0.05% max, V 0.05% max, Al 0.03% max, Mo+V+Al= 0.09% max

SAILRIM

0.07-0.11

0.35-0.45

0.040

0.040

0.06 max