SKD11 T30402 (UNS) (D2) ASTM A350 Lf2 Invar Steel High Alloy Steel

Alloy steel
When other elements comprising metals and non-metals are added to carbon steel, alloy steel is formed. These alloy steels display various environmental, chemical and physical properties that can vary with the elements used to alloy. Here the proportion of alloying elements can provide different mechanical properties.
Alloying elements
There are around 20 alloying elements that can be added to carbon steel to produce various grades of alloy steel. These provide different types of properties. Some of the elements used and their effects include:

Aluminium - can rid steel of phosphorous, sulfur and oxygen
Chromium - can increase toughness, hardness and wear resistance
Copper - can increase corrosion resistance and harness
Manganese - can increase high-temperature strength, wear resistance, ductility and hardenability
Nickel - can increase corrosion, oxidation resistance and strength
Silicon- can increase magnetism and strength
Tungsten - can increase strength and hardness
Vanadium - can increase corrosion, shock resistance, strength and toughness

Product Name	alloy steel plate / sheet
Material	alloy steel
Standard	ASTM, AISI, JIS, DIN, GB, EN, ASME, BS, ISO, GOST, SAE, IS & Custom Chemistry
Production Route	Hot  Rolled, Cold Rolled
Size	Thickness: 0.1 - 400mm
	Width: 100 - 3000mm,or as required.
	Length: 500 - 12000mm,or as required.
Surface	Black painted,PE coated,galvanized,plain,brushed,cladded
Steel Grade	GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B,  Q275, Q295A, Q295B,          Q345B,Q345C,Q345D,Q345E,Q390A,Q390B,Q390C,Q390D,Q390E,Q420,Q420B,Q420C,Q420DQ420E,Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D,Q620E,Q690D,Q690E
	EN:  S185, S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q
	ASTM:  Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade 42, Grade 50, Grade 55,
	Grade 60, Grade 65, Grade 80
	JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE
Density	7.80 g/cm3
Elongation	20%
Hardness	70 HB
Tensile Strength	295 Mpa
KGS	9000
Application	1.Automobile, Bridges, Buildings.
	2.Machinery, Pressure vessel industries.
	3.Ship building, Engineering construction.
	4.Mechanical manufacturing, Pavement slab, ect.
Advantages	1.Short delivery time
	2.Quality assurance
	3.Competitive price
	4.Superior Service
Tolerance	≤1%
MOQ	1 Tons
Package	Standard export package, or as required.
Price term	FOB, CIF, CFR, CNF, Ex-work
Payment	T/T, L/C, Western Union, etc.
Delivery time	Within 7-15 workdays after receiving deposit or L/C
Container size	20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM
	40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM
	40ft HC: 12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM

Standard Specification for Alloy Steel Sheets & Plates
ASTM A387 / ASME SA387	Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
ASTM A829 / A829M	Standard Specification for Alloy Structural Steel Plates
ASTM A514 / A514M	Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding
ASTM A202/A202M	Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Manganese-Silicon
ASTM A633 / A633M	Standard Specification for Normalized High-Strength Low-Alloy Structural Steel Plates
ASTM A506 / ASME SA506	Standard Specification for Alloy and Structural Alloy Steel, Sheet and Strip, Hot-Rolled and Cold-Rolled
ASTM A517 / A517M	Standard Specification for Pressure Vessel Plates, Alloy Steel, High-Strength, Quenched and Tempered

Regular Material Datas(Normal Strengtht)
Standard	Grade	C max	Mn min	Si max	P max	S max	Yield strength MIN	Tensile strength	Elongation% MIN
GB712-2011	A	0.21	0.5	0.5	0.035	0.035	235	400-520	22
GB712-2011	B	0.21	0.8	0.35	0.035	0.035	235	400-520	22
GB712-2011	D	0.21	0.6	0.35	0.03	0.03	235	400-520	22
GB712-2011	E	0.18	0.7	0.35	0.025	0.025	235	400-520	22
Thickness can supply: 1.5mm-20mm
Width: 50mm-1500mm, cut to customized
Cutting large coils into steel strips but directly cutting into large diameter coil strip, also can cut to small coil strip.

Regular Material Datas(High Strengtht)
Standard	Grade	C max	Mn min	Si max	P max	S max	Yield strength MIN	Tensile strength	Elongation% MIN
GB712-2011	AH32	0.18	0.90-1.60	0.5	0.03	0.03	315	450-570	22
GB712-2011	AH36	0.18	0.90-1.60	0.5	0.03	0.03	355	490-630	21
GB712-2011	AH40	0.18	0.90-1.60	0.5	0.03	0.03	390	510-660	20
GB712-2011	DH32	0.18	0.90-1.60	0.5	0.025	0.025	315	450-570	22
GB712-2011	DH36	0.18	0.90-1.60	0.5	0.025	0.025	355	490-630	21
GB712-2011	DH40	0.18	0.90-1.60	0.5	0.025	0.025	390	510-660	20
GB712-2011	EH32	0.18	0.90-1.60	0.5	0.025	0.025	315	450-570	22
GB712-2011	EH36	0.18	0.90-1.60	0.5	0.025	0.025	355	490-630	21
GB712-2011	EH40	0.18	0.90-1.60	0.5	0.025	0.025	390	510-660	20
GB712-2011	FH32	0.16	0.90-1.60	0.5	0.02	0.02	315	450-570	22
GB712-2011	FH36	0.16	0.90-1.60	0.5	0.02	0.02	355	490-630	21
GB712-2011	FH40	0.16	0.90-1.60	0.5	0.02	0.02	390	510-660	20
Thickness can supply: 1.5mm-50mm
Width: 50mm-1500mm, cut to customized
Cutting large coils into steel strips but directly cutting into large diameter coil strip, also can cut to small coil strip.

Regular Material Datas(Super High Strengtht)
Standard	Grade	C max	Mn max	Si max	P max	S max	Yield strength MIN	Tensile strength	Elongation% MIN
GB712-2011	AH420	0.21	1.7	0.55	0.03	0.03	420	530-680	18
GB712-2011	AH460	0.21	1.7	0.55	0.03	0.03	460	570-720	17
GB712-2011	AH500	0.21	1.7	0.55	0.03	0.03	500	610-770	16
GB712-2011	AH550	0.21	1.7	0.55	0.03	0.03	550	670-830	16
GB712-2011	AH620	0.21	1.7	0.55	0.03	0.03	620	720-890	15
GB712-2011	AH690	0.21	1.7	0.55	0.03	0.03	690	770-940	14
GB712-2011	DH420	0.2	1.7	0.55	0.025	0.025	420	530-680	18
GB712-2011	DH460	0.2	1.7	0.55	0.025	0.025	460	570-720	17
GB712-2011	DH500	0.2	1.7	0.55	0.025	0.025	500	610-770	16
GB712-2011	DH550	0.2	1.7	0.55	0.025	0.025	550	670-830	16
GB712-2011	DH620	0.2	1.7	0.55	0.025	0.025	620	720-890	15
GB712-2011	DH690	0.2	1.7	0.55	0.025	0.025	690	770-940	14
GB712-2011	EH420	0.2	1.7	0.55	0.025	0.025	420	530-680	18
GB712-2011	EH460	0.2	1.7	0.55	0.025	0.025	460	570-720	17
GB712-2011	EH500	0.2	1.7	0.55	0.025	0.025	500	610-770	16
GB712-2011	EH550	0.2	1.7	0.55	0.025	0.025	550	670-830	16
GB712-2011	EH620	0.2	1.7	0.55	0.025	0.025	620	720-890	15
GB712-2011	EH690	0.2	1.7	0.55	0.025	0.025	690	770-940	14
GB712-2011	FH420	0.18	1.6	0.55	0.02	0.02	420	530-680	18
GB712-2011	FH460	0.18	1.6	0.55	0.02	0.02	460	570-720	17
GB712-2011	FH500	0.18	1.6	0.55	0.02	0.02	500	610-770	16
GB712-2011	FH550	0.18	1.6	0.55	0.02	0.02	550	670-830	16
GB712-2011	FH620	0.18	1.6	0.55	0.02	0.02	620	720-890	15
GB712-2011	FH690	0.18	1.6	0.55	0.02	0.02	690	770-940	14
Thickness can supply: 1.5mm-50mm
Width: 50mm-1500mm, cut to customized
Cutting large coils into steel strips but directly cutting into large diameter coil strip, also can cut to small coil strip.

Comparison Table Of Domestic And Foreign Alloy Grade
Material	China	Former	America	England	Japan	French	Germany
		Soviet Union
	GB	ГOCT	ASTM	BS	JIS	NF	DIN
Alloy Structural Steel	20Mn2	20Г 2	13,201,321	150M19	SMn420		20Mn5
	30Mn2	30Г 2	1330	150M28	SMn433H	32M5	30Mn5
	35Mn2	35Г 2	1335	150M36	SMn438(H)	35M5	36Mn5
	40Mn2	40Г 2	1340		SMn443	40M5
	45Mn2	45Г 2	1345		SMn443		46Mn7
	50Mn2	50Г 2				~55M5
	20MV						20MnV6
	35SiMn	35CГ		En46			37MnSi5
	42SiMn	35CГ		En46			46MnSi4
	40B		TS14B35
	45B		50B46H
	40MnB		50B40
	45MnB		50B44
	15Cr	15X	5115	523M15	SCr415(H)	12C3	15Cr3
	20Cr	20X	5120	527A19	SCr420H	18C3	20Cr4
	30Cr	30X	5130	530A30	SCr430		28Cr4
	35Cr	35X	5132	530A36	SCr430(H)	32C4	34Cr4
	40Cr	40X	5140	520M40	Scr440	42C4	41Cr4
	45Cr	45X	51,455,147	434A99	SCr445	45C4
	38CrSi12CrMo	38XC/12XM		620CrB		12CD4	13CrMo44
	15CrMo	15XM	A-387CrB	1653	STC42/STT42/STB42	12CD4	16CrMo44
	20CrMo	20XM	41,194,118	CDS12	STC42/STT42/STB42	18CD4	20CrMo44
				CDS110
	25CrMo		4125	En20A		25CD4	25CrMo4
	30CrMo	30XM	4130	1717COS110	SCM420	30CD4
	42CrMo		4140	708A42		42CD4	42CrMo4
				708M40
	35CrMo	35XM	4135	708A37	SCM3	35CD4	34CrMo4
	12CrMoV	12XMФ
	12Cr1MoV	12X1MФ					13CrMoV42
	25Cr2Mo1VA	25X2M1ФA
	20CrV	20XФ	6120				22CrV4
	40CrV	40XФA	6140				42CrV6
	50CrV	50XФA	6150	735A30	SUP10	50CV4	50CrV4
	15CrMn	15XГ,18XГ
	20CrMn	20XГ CA	5152	527A60	SUP9
	30CrMnSiA	30XГ CA
	40CrNi	40XH	3140H	640M40	SNC236		40NiCr6
	20CrNi3A	20XH3A	3316			20NC11	20NiCr14
	30CrNi3A	30XH3A	3325/3330	653M31	SNC631H		28NiCr10
					SNC631
	20MnMoB		80B20
	38CrMoA1A	38XMIOA		905M39	SACM645	40CAD6.12	41CrA1Mo07
	40CrNiMoA	40XHMA	4340	871M40	SNCM439		40NiCrMo22

 

AUGE	steel	Galvanized steel	Stainless steel	aluminum	Electrical steel
(Ga.)
	in (mm)	in (mm)	in (mm)	in (mm)	in (mm)
3	0.2391 (6.07)	-	-	-	-
4	0.2242 (5.69)	-	-	-	-
6	0.1943 (4.94)	-	-	0.162 (4.1)	-
7	0.1793 (4.55)	-	0.1875 (4.76)	0.1443 (3.67)	-
8	0.1644 (4.18)	0.1681 (4.27)	0.1719 (4.37)	0.1285 (3.26)	-
9	0.1495 (3.80)	0.1532 (3.89)	0.1563 (3.97)	0.1144 (2.91)	-
10	0.1345 (3.42)	0.1382 (3.51)	0.1406 (3.57)	0.1019 (2.59)	-
11	0.1196 (3.04)	0.1233 (3.13)	0.1250 (3.18)	0.0907 (2.30)	-
12	0.1046 (2.66)	0.1084 (2.75)	0.1094 (2.78)	0.0808 (2.05)	-
13	0.0897 (2.28)	0.0934 (2.37)	0.094 (2.4)	0.072 (1.8)	-
14	0.0747 (1.90)	0.0785 (1.99)	0.0781 (1.98)	0.0641 (1.63)	-
15	0.0673 (1.71)	0.0710 (1.80)	0.07 (1.8)	0.057 (1.4)	-
16	0.0598 (1.52)	0.0635 (1.61)	0.0625 (1.59)	0.0508 (1.29)	-
17	0.0538 (1.37)	0.0575 (1.46)	0.056 (1.4)	0.045 (1.1)	-
18	0.0478 (1.21)	0.0516 (1.31)	0.0500 (1.27)	0.0403 (1.02)	-
19	0.0418 (1.06)	0.0456 (1.16)	0.044 (1.1)	0.036 (0.91)	-
20	0.0359 (0.91)	0.0396 (1.01)	0.0375 (0.95)	0.0320 (0.81)	-
21	0.0329 (0.84)	0.0366 (0.93)	0.034 (0.86)	0.028 (0.71)	-
22	0.0299 (0.76)	0.0336 (0.85)	0.031 (0.79)	0.025 (0.64)	0.0310 (0.787)
23	0.0269 (0.68)	0.0306 (0.78)	0.028 (0.71)	0.023 (0.58)	0.0280 (0.711)
24	0.0239 (0.61)	0.0276 (0.70)	0.025 (0.64)	0.02 (0.51)	0.0250 (0.64)
25	0.0209 (0.53)	0.0247 (0.63)	0.022 (0.56)	0.018 (0.46)	0.0197 (0.50)
26	0.0179 (0.45)	0.0217 (0.55)	0.019 (0.48)	0.017 (0.43)	0.0185 (0.47)
27	0.0164 (0.42)	0.0202 (0.51)	0.017 (0.43)	0.014 (0.36)	-
28	0.0149 (0.38)	0.0187 (0.47)	0.016 (0.41)	0.0126 (0.32)	-
29	0.0135 (0.34)	0.0172 (0.44)	0.014 (0.36)	0.0113 (0.29)	0.0140 (0.35)
30	0.0120 (0.30)	0.0157 (0.40)	0.013 (0.33)	0.0100 (0.25)	0.011 (0.27)
31	0.0105 (0.27)	0.0142 (0.36)	0.011 (0.28)	0.0089 (0.23)	0.0100 (0.25)
32	0.0097 (0.25)	-	-	-	-
33	0.0090 (0.23)	-	-	-	0.009 (0.23)
34	0.0082 (0.21)	-	-	-	-
35	0.0075 (0.19)	-	-	-	-
36	0.0067 (0.17)	-	-	-	0.007 (0.18)
37	0.0064 (0.16)	-	-	-	-
38	0.0060 (0.15)	-	-	-	0.005 (0.127)

Alloy steel products and their applications
There are hundreds of products that can be manufactured with alloy steels of varying compositions. These include alloy steel pipes and tubes, alloy steel plates, sheets and coils, alloy steel bars, rods and wires, alloy steel forged fittings, alloy steel buttweld fittings, alloy steel flanges, fasteners and more. Alloy steels have many uses in various industries such as automobiles, mining, machinery and equipment, railways, roadconstruction, buildings, appliances and off-shore applications.

Applications in building large structures
In the building and construction industry, alloy steels are used for very large modern structures such as airports, bridges, skyscrapers and stadiums in the form of a steel skeleton. Alloy steels provide the required high strength to support such large structures. Even concrete structures use alloy steels as reinforcement to add strength and reduce the overall weight of structures. Smaller items such as screws, nails and bolts made of alloy steels are used in the building and construction industry.

Applications in building bridges
Bridges use special alloy steels known as weathering steels. These provide enhanced protection from corrosion because of the presence of nickel, copper and chromium as alloying elements. Weathering steels also find uses in buildings as facing material to improve aesthetics. Weathering steel offers several benefits which include high safety, ease and quickness of construction, aesthetic looks, shallow depth of construction, low maintenance and amenable to alterations in the future. Because of its natural weathered finish, no painting is required thus avoiding environmental issues caused by paints. Weathering steels are extremely cost-effective in the long run.