GENERAL SCOPE

AISI 4130 low alloy steel containing nominally 0.3% Carbon, 1% Chromium and 0.2% Molybdenum is widely used in oil patch applications. 

CHEMICAL COMPOSITION

 

C

Si

Mn

P

S

Cr

Mo

Ni

Al

Cu

Sn

Min

0.30

0.15

0.40

 

 

0.8

0.2

 

 

Max

0.33

0.35

0.6

0.015

0.015

1.2

0.25

0.25

0.04

0.25

0.1

MECHANICAL PROPERTIES

Tensile

Result

RP 0.2%

75,000 PSI MIN

RM

95,000 PSI MIN

Elongation

18%

Reduction in Area

35%

HBW10/3000

207-237

KCV @ -46 DEG C

42J min Ave, 34J min single

Tensile specimens shall be processed as per para 6.4 of API 6A (PSL 3) with prolongation testing up to 5” (127mm) dia.

SURFACE CONDITION                                                Black / Peeled.      

REDUCTION RATIO                                                      4:1 Min

STRUCTURE                                                                   Grain size will be ASTM 5 or finer.

ULTRASONIC EXAMINATION                                Ultrasonic examination available per ASTM A388/API6A Latest Edition

STOCK RANGE

Rolled Bar                                                                        Quenched and Tempered                                                                        25mm – 290mm ⌀

Rolled/Forged Bar                                                     Annealed condition suitable to quench and temper.                  250mm – 558.8mm ⌀