High quality special steel supplier.Old rev.
  • Certified Company

    DNV&ABS
  • Certified Company

    ISO 9001:2008
  • R&D Production

    In China

4340 H


4340 H material is Australia Structural steel.

Chemical composition of 4340 H, 4340 H mechanical properties, 4340 H datasheet, 4340 H equivalent grade, Heat treatment and temperature process of 4340 H.


4340 H property sheet

4340 H Spec.

Chemical Composition of 4340 H

C 0.37-0.44
Si 0.10-0.35
Mn 0.55-0.90
P 0.04
S 0.04
Cr 0.65-0.95
Ni 1.55-2.00
Mo 0.20-0.30

Mechanical Properties of 4340 H

Rp0.2 (MPa) 982 (≥)
Rm (MPa) 762 (≥)
AKV (J) 32
A (%) 23
Z (%) 32
Hardness HBW 312

4340 H shape and dimensions

4340 H Round bar: 1mm-800mm
4340 H Square bar: 10mm * 10mm-600mm *600mm
4340 H Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
4340 H Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
4340 H Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
4340 H Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

4340 H Stock

1.4882 strip/sheet/plate stock
1.2714 Hot-Work Mould Steel Stock List - 2019-10
17-4PH Stainless Steel Seamless Tube Pipe

4340 H Relevant products

D6AC Forging Hollow Bar

D6AC Forging Hollow Bar

The United States began to be developed in the early ...
D6AC Forging Hollow Bar

D6AC Forging Hollow Bar

The United States began to be developed in the early ...
17-4ph steel wire

17-4ph steel wire

17-4ph steel wire,Hard-Drawn,
A387 F5 / Grade 5 Coil / Sheet

A387 F5 / Grade 5 Coil / Sheet

A387 F5 Grade 5 Coil Sheet
GH 3536 Sheet

GH 3536 Sheet

GH 3536 Sheet
4145H Hollow Bar

4145H Hollow Bar

4145H Hollow Bar
IncoloyA-286 / GH 2132

IncoloyA-286 / GH 2132

IncoloyA-286 GH 2132
HastelloyC-22 round bar

HastelloyC-22 round bar

HastelloyC-22 round bar
GH3039 round bar

GH3039 round bar

GH3039 round bar
HastelloyC-276 round bar

HastelloyC-276 round bar

HastelloyC-276 round bar
Incoloy800 round bar

Incoloy800 round bar

Incoloy800 round bar
17-7PH / 631 COIL Strip Sheet

17-7PH / 631 COIL Strip Sheet

17-7PH 631 Precipitation hardening stainless steel strip, coil, sheet,
GH 3536 Sheet

GH 3536 Sheet

GH 3536 Sheet
GH 605

GH 605

GH 605
S30409/304H/S30409/1.4948 Tube

S30409/304H/S30409/1.4948 Tube

ASTM ASMEA312 SA312;ASTMB677;ASTMB690,EN10216-5;
S32169/321H/S32109/1-4940 Tube

S32169/321H/S32109/1-4940 Tube

S32169 321H S32109 1-4940 Tube
XH78T Sheet & Strip

XH78T Sheet & Strip

XH78T Sheet & Strip
GH3536 Sheet

GH3536 Sheet

GH 3536 Sheet
ESR AMS 5604 / 5622 / 5643 17-4PH/630 Block

ESR AMS 5604 / 5622 / 5643 17-4PH/630 Block

ESR AMS 5604 5622 5643 17-4PH 630 Block
UMCo-50

UMCo-50

Si0 75Mn0 65Fe20 5Cr28Co50C0 08Main FeaturesUMCo50 is a...