4340 H Special Alloy

Chemical composition%of the ladle analysis of grade4340 H

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Mo(%)
0.37-0.440.10-0.350.55-0.900.040.040.65-0.951.55-2.000.20-0.30
4340 H

Mechanical properties of grade4340 H

Proof strength
Rp0.2(MPa)
Tensile strength
Rm(MPa)
Impact energy
KV(J)
Elongation at fracture
A(%)
Reduction in cross section on fracture
Z(%)
As-Heat-Treated Condition Brinell hardness(HBW)
249(≥) 148(≥) 13 23 31 Solution and Aging,Annealing,Ausaging,Q+T,etc 231

Physical properties of grade 4340 H

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J/kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
442(≥) 971(≥) 41 21 23 Solution and Aging,Annealing,Ausaging,Q+T,etc 341
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
566 977 139

4340 H Range of products

Product type Products Dimension Processes Deliver Status
Plates/Sheets Plates/Sheets 0.08-200mm(T)*W*L Forging,hot rolling and cold rolling Annealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel Bar Round Bar,Flat Bar,Square Bar Φ8-1200mm*L Forging,hot rolling and cold rolling,Cast Black,Rough Turning,Shot Blasting,
Coil/Strip Steel Coil/Steel Strip 0.03-16.0x1200mm Cold-Rolled&Hot-Rolled Annealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/Tubes Seamless Pipes/Tubes,Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion,Cold Drawn,Welded Annealed,Solution and Aging,Q+T,ACID-WASHED

4340 H Steel Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
17-4PH Coil Stock 0.08*200mm Coil or Strip Kgs 1623 Cold-Rolled+Annealed Enquiry
17-4PH Round Bar Φ5-300mm*L Round Bar Kgs 46958 Hot-Rolled+Annealed+black Enquiry
17-4PH plate 8-45*1200*3000mm Plate or Sheet Tons 4.9 Hot-Rolled+Annealed+black Enquiry
IncoloyA-286 / GH 2132 Stock Φ8-65mm*L Round Bar Kgs 489 Hot-Rolled+Annealed+black Enquiry
Incoloy800 round bar Φ115*1400 Round Bar Kgs 169 Hot-Rolled+Annealed+black Enquiry
17-7PH / 631 Coil & Strip, Sheet Stock 0.3-3.0*10-180mm Coil or Strip Kgs 1236.22 Cold-Rolled+Annealed Enquiry
1.4882 strip/sheet/plate stock 3.5x200x1000-2000mm Coil or Strip Kgs 200 Cold-Rolled+Annealed Enquiry
H13 Tool Steel 50x710xL Flat or Square bar PCS 4 Forged+Annealed+black Enquiry
1.2344(H13/X40CrMoV5-1/Z40CDV5) Stock List Dia.182mm - Dia.510mm Round Bar Tons 120 Forged+Annealed+black Enquiry
1.2714 Hot-Work Mould Steel Flat Bar Stock(2019-09-03) Select 0 Select Enquiry
15-5PH Forgrd Flat Bar Select 0 Select Enquiry
PH13-8Mo Forgings Select 0 Select Enquiry
1.2714 Stock list 2020-06-15 Select 0 Select Enquiry
1.2714 QT Bar Stock List 2020-06-15 Select 0 Select Enquiry
0Cr13Ni8Mo2Al, PH13-8Mo, 13-8Mo, XM-13 round bar stock Select 0 Select Enquiry