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Special Alloy

AS 4340 H

The high quality Australia AS 4340 H material is one of the more steel grades we supply, Australia Structural steel. 4340 H is our main production grade, which has been approved by customers in many countries since its initial production, including our 4340 H round bars, flat bar, forgings, fasteners, tubes, wires, strips, sheets & Plates, as well as a variety of profiles, professional high precision auto-lathe processing manufacturer of clinching fasteners, axes, standoffs, screws, studs, nuts, bolt, OEM parts and special shaped turning partsthe state of delivery includes quenched and tempered, annealed, machined semi-finished products, we also have strict management of the packaging, to avoid material damage from transportation. We are the best supplier of 4340 H materials, and we are willing to develop together with customers from all over the world.

Also includes 4340 H steel material norm, chemical composition, mechanical properties, datasheet, 4340 H equivalent, heat treatment and temperature process of 4340 H, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in 4340 H this steel grade have a more comprehensive understanding, Download the full 4340 H PDF version of this datasheet.

2015-08-10 15:57:39 Print this page

Chemical composition (wt.%)

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

Mechanical Properties

Rp0.2 (MPa) Rm (MPa) Impact
KV (J)
Elongation
A (%)
A Z (%) Delivery Hardness HB
247 (≥) 284 (≥) 24 22 32 Solution & Aging, Ann, Ausaging, Q+T 122

4340 H Equivalent Grade Stock

Materials Dimension Quantity State
17-4PH Coil Stock 0.08*200mm 1623 Kgs Cold-Rolled+Annealed
17-4PH Round Bar Φ5-300mm*L 46958 Kgs Hot-Rolled+Annealed+black
17-4PH plate 8-45*1200*3000mm 4.9 Tons Hot-Rolled+Annealed+black
IncoloyA-286 / GH 2132 Stock Φ8-65mm*L 489 Kgs Hot-Rolled+Annealed+black
Incoloy800 round bar Φ115*1400 169 Kgs Hot-Rolled+Annealed+black
17-7PH / 631 Coil & Strip, Sheet Stock 0.3-3.0*10-180mm 1236.22 Kgs Cold-Rolled+Annealed

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4340 H

Products

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UMCo-50