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30 Application:China structural steel and alloy steel
Category Type Steel grade Standard Country
Grades Special Alloy 30 GBT China

Chemical composition % of the ladle analysis of grade 30

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.27-0.34 0.17-0.37 0.50-0.80 0.035 0.035 0.25 0.3 0.25
30
Mechanical properties of grade 30
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)
286 (≥) 942 (≥) 31 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 233
Physical properties of grade 30
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
612 (≥) 146 (≥) 22 24 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 112
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
292 588 148
30 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
T72301 GBT China
Carbon tool steel products which include hot or cold finished bar, plate, sheet, rod, wire, or forgings, which are normally fabricated into tools, dies, or fixtures.
W2-A GBT China
Carbon tool steel products which include hot or cold finished bar, plate, sheet, rod, wire, or forgings, which are normally fabricated into tools, dies, or fixtures.
T72302 GBT China
Carbon tool steel products which include hot or cold finished bar, plate, sheet, rod, wire, or forgings, which are normally fabricated into tools, dies, or fixtures.
G3000 GBT China
Cars and diesel engine cylinder block, cylinder head, flywheel and differential carrier medium castings, piston, brake hub and clutch plate
T72305 GBT China
Carbon tool steel
00Cr30Mo2 GBT China
Stainless steel bars
GH2130 GBT China
Classification and designation for superalloys and high temperature intermetallic materials
GH2302 GBT China
Classification and designation for superalloys and high temperature intermetallic materials
GH3030 GBT China
Classification and designation for superalloys and high temperature intermetallic materials
GH3039 GBT China
Classification and designation for superalloys and high temperature intermetallic materials
GH3044 GBT China
Classification and designation for superalloys and high temperature intermetallic materials
GH4302 GBT China
Nickel-base superalloy
S20300 GBT China
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
301 GBT China
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 167 Type 301 GBT China
Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip
A 240 Type 301 GBT China
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 554 MT 301 GBT China
Welded Stainless Steel Mechanical Tubing
A 666 Type 301 GBT China
Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
A 240 S30100 GBT China
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 666 S30100 GBT China
Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar

Relevant products

30 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
UNS K30960(VIM+ESR) Bright Round Bar Dia.22mm Round Bar Kgs 50 Hot-Rolled+Annealed+black Enquiry

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