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Chemical composition % of the ladle analysis of grade 4340 H

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
4340 H
Mechanical properties of grade 4340 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)
727 (≥) 468 (≥) 23 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 124
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
958 (≥) 462 (≥) 41 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 321
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
727 381 621
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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
A 240 S43400
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 554 S43400
Welded Stainless Steel Mechanical Tubing
S43400
Ferritic Chromium Molybdenum Stainless Steel
SA-240 S43400
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
1Cr18Ni9Si3
Cold rolled steel sheet
0Cr17Ni7Al
Heat-resisting steel sheets and plates
0Cr17Ni7Al
Heat-resisting steel sheets and plates
GH1015
Solid solution strengthening type iron base alloy
GH1016
Classification and designation for superalloys and high temperature intermetallic materials
GH1035
Classification and designation for superalloys and high temperature intermetallic materials
GH1040
Classification and designation for superalloys and high temperature intermetallic materials
GH1131
Classification and designation for superalloys and high temperature intermetallic materials
GH1140
Classification and designation for superalloys and high temperature intermetallic materials
GH2018
Classification and designation for superalloys and high temperature intermetallic materials
GH2036
Classification and designation for superalloys and high temperature intermetallic materials
GH2038
Classification and designation for superalloys and high temperature intermetallic materials
GH2130
Classification and designation for superalloys and high temperature intermetallic materials
GH2132
Classification and designation for superalloys and high temperature intermetallic materials
GH2135
Classification and designation for superalloys and high temperature intermetallic materials
GH2136
Classification and designation for superalloys and high temperature intermetallic materials

Relevant products

4340 H Equivalent Grade 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

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