GENERAL SCOPE

AISI 8630 HMod is a low alloy steel that is used in wellhead equipment, connectors, hangers, and block valves requiring deep hardening strength with excellent impact resistance.

CHEMICAL COMPOSITION

 

C

Si

Mn

P

S

Cr

Mo

Al

Ni

Al

Sn

Cu

Min

0.25

0.15

0.70

 

 

0.85

 0.35

0.75

 

 

Max

0.33

0.35

1.10

0.025

0.025

1.00

0.45

0.035

0.90

0.035

0.02

0.25

MECHANICAL PROPERTIES

Annealed or As-rolled - no mechanical properties; suitable for further heat treatment

Condition: Hardened and Tempered to 80 KSI

 

 

 

 

Condition

Annealed

UTS

100 KSI Min

Hardness

156-207 Hb

0.2% Proof Stress

80 KSI Min

Elongation

18.00%

Red of Area

35.00%

Impacts @ -46c

42/34J

 

SURFACE CONDITION                                               Peeled / Smooth Turned Bar.

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

Rolled / Peeled Bar                                                   Quenched and Tempered                                                            50.8mm –230mm ⌀ (241.3 mm ⌀ Forged, Heat Treated)

Forged Annealed Bar                                              Annealed condition suitable to quench and temper       270mm – 609.6mm ⌀