GB-ASTM-JIS-EN-DIN-BS-ISO STANDARD COMPARISON

GB-ASTM-JIS-EN-DIN-BS-ISO STANDARD COMPARISON

Item	GB	ASTM ASME	JIS	EN	DIN	BS	ISO
Pressure Vessel Steels.	20g	（S）.A515MGr.65	SB410	P235GH	HⅠ	161G430	P235
		（S）.A516MGr.65	SB450	P265GH	HⅡ		PH235
	16Mng 19Mng	（S）.A537MCL.1	SEV245	P355GH	19Mn6	——	P355 PH355
	15CrMog 15CrMoR	（S）.A387MGr.12	——	13CrMo4-5	13CrMo44	——	14CrMo45
	22Mng	（S）.A299M	——	——	——	——	——
	13MnNiCrMoNbg	——	——	——	BHW35/13	——	——
	13MnNiMoNbR				MnNiMo54
	16MnR	（S）.A537MCL.1	SPV355 SEV245	P355GH	19Mn6	——	P355 PH355
	15MnVNR	（S）.A737MGr.C	SPV410	——	——	——	——
	15MnVR	——	SEV295 SPV410	——	——	——	——
	16MnDR	（S）.A662MGr.C	SLA360	——	ESTE355	——	P355NL
		（S）.A738MGr.A
	12Cr2Mo1R	（S）.A387MGr.22	——	10CrMo9-10	10CrMo910	——	13CrMo910
	（2.25Cr1Mo）						（T1.T2）
	14Cr1MoR	（S）.A387MGr.11	——	——	——	——	——
	（1.25Cr0.5Mo）
Low-Alloy High Strength Steels	12Mn/Q295（A.B）	A572MGr.42	SS490	S275JR S275N	St44-3	43A	Fe430A
		A633MGr.A		S275NL		43B	Fe430B
	16Mn 14MnNb/	A572MGr.50	SM490A	S355JR S355J2G3	St52-3	50A 50B	E355DQ
	Q345（A.B.C.D.E）	A633MGr.C	SN490B	S355JO S355J2G4		50C 50D	E355E
		A633MGr.D	SM490C	S355N S355K2G3		50DD	Fe510B
				S355NL S355K2G4			Fe510C
							Fe510D
	15MnV/Q390	A633MGr.50	SM490（YA.YB）	——	StE380	50F	——
	（A.B.C.D.E）	A572	SM520B SM520C
	15MnVN/Q420	A572MGr.60	——	S420N	StE420	——	E420DD
	（A.B.C.D.E）	A633MGr.E		S420NL			E420E
	WH60/Q460	A572MGr.65	SM570	S460N	StE460	55C	E460CC
	（C.D.E）			S460NL		55EE	E460DD
							E460E
high-rise building Structural steel	HBS235（Z）	A572MGr.42	SN400A	S235JO	St37-2	40B	Fe430A
		A633MGr.A	SN400B	S235J2G3	St37-3	40D	Fe430B
			SN400C
	HBS345（Z）	A572MGr.50	SN490B	S355J2G3	St52-3	355D 355E	E355DD
			SN490C	S355K2G3	StE355	355EM	E355E
				S355N S355NL		355EMZ
Item	GB	ASTM ASME	JIS	EN	DIN	BS	ISO
Bridge	16Mnq 14MnNbq	A709MGr.50	SM490A SM490B	S355J2G3	St52-3	50B	E355DD
Steel	16MnCuq	A572MGR.50	SM490C SM490YA	S355K2G3	St355	50C	E355E
		A633MGr.D	SM490YB SM520B			50D
			SM520C			50DD
	15MnVq	——	——	——	StE380	——	——
	15MnVNq	A572Gr50 A633MGrE	——	——	StE420	——	——
Alloy Structure  Steel	40Cr	5140	SCr440	41Cr4	41Cr4	——	41Cr4
	20Mn2	1524	SMn420	——	——	——	22Mn6
	40Mn2	1340	SMn438	——	——	——	42Mm6
	——	——	SMn443	——	——	——	——
	15CrMo	——	——	——	13CrMo45	——	——
	30CrMo	4130	SCM430	25CrMo4	25CrMo4	25CRMo4	——
	35CrMo	4137	SCM435	34CrMo4	34CrMo4	34CrMo4	34CrMo4
	42CrMo	4140	SCM440	42CrMo4	42CrMo4	42CrMo4	42CrMO4
Mold Steel	45 SM45	1045	S45C S48C	1C45	1C45	1C45	C45E4
	50 SM48 SM50	1050	S50C S53C	1C50	1C50	1C50	C50E4
	55 SM53 SM55	1055	S55C S58C	1C55	1C55	1C55	C55E4
	SM3Cr2Mo	P20	——	——	——	——	——
	40Cr	5140	SCr440	41Cr4	41Cr4	——	41Cr4
Carbon structure steel	Q235（A.B.C.D）	A283MGr.C	SS400	S235JR S235JO	St37-2	40A 40B	Fe360
	——	A283MGr.D	SM400（A.B）	S235J2G3	St37-3	40C 40D	(A.B.C.D)
	Q275	——	SS490	——	——	——	Fe430A
	20	1020	S20C S22C	1C22	1C22	1C22	——
	25	1025	S25C S28C	1C25	1C25	1C25	C25E4
	30	1030	S30C S33C	1C30	1C30	1C30	C30E4
	35	1035	S35C S38C	1C35	1C35	1C35	C35E4
	40	1040	S40C S43C	1C40	1C40	1C40	C40E4
	45	1045	S45C S48C	1C45	1C45	1C45	C45E4
	50	1050	S50C S53C	1C50	1C50	1C50	C50E4
	55	1055	S55C S58C	1C55	1C55	1C55	C55E4
	50Mn	1053	SWRH52B	2C50	2C50	2C50	SL.SM

 

GOST, GB, JIS, ASTM, BJ, DIN, ISO STEEL STANDARD EQUIVALENTS

In this post, we will present a table that shows the equivalents between some of the most commonly used steel standards, including GOST (Russia), GB (China), JIS (Japan), ASTM (USA), BJ (British), DIN (Germany), NF (France), and ISO. The table will provide a side-by-side comparison of the different grades.

By referring to this table, engineers, manufacturers, and other professionals can quickly and easily identify the most suitable types of steel for their specific applications.

Please check the Excel file in the shared link for the table:

https://docs.google.com/spreadsheets/d/1oFf4By4EzKFrQXFpu7KtGSLSgxWjgLcE/edit?usp=sharing&ouid=114882794807797039738&rtpof=true&sd=true

Composition and Properties of 3003 Aluminum Plate

The 3003 aluminum plate belongs to the aluminum-manganese alloy series, and is widely used as an anti-rust aluminum plate due to its excellent corrosion resistance. Although its strength is not high, it has good formability and weldability. 

This product is commonly used for low-load parts that require high plasticity and work in liquid or gas media, such as kitchen utensils, chemical product processing and storage devices, tanks, and pressure vessels. 

The 3003 aluminum alloy contains aluminum, silicon, copper, zinc, manganese, and iron, with aluminum being the primary component. 

The alloy exhibits excellent corrosion resistance against a variety of substances, including the atmosphere, freshwater, seawater, food, organic acid, and dilute acid.

Its material composition consists of:

• Aluminum (Al): 96.8%
• Manganese (Mn): 1.2%
• Copper (Cu): 0.12%
• Iron (Fe): 0.7%
• Zinc (Zn): 0.15%
• Silicon (Si): 0.6%
• Other elements: 0.15% (maximum) each, and 0.05% maximum for the total of all other elements.

Some of the key characteristics of 3003 aluminum plate include:

• High formability and workability, which allows for easy bending, cutting, and shaping.
• Good corrosion resistance, making it suitable for use in wet environments or applications where exposure to corrosive substances is expected.
• Moderate strength, making it suitable for use in applications that do not require high strength, but still need to withstand moderate loads.
• Excellent weldability, which makes it easy to join with other materials using various welding techniques.
• Excellent surface finish, which allows for high-quality surface treatments such as anodizing, painting, or polishing.

How to improve the bonding force of electroless nickel plating on stainless steel

Electroless nickel plating of stainless steel parts (drive shafts, meshing parts, moving parts, etc.) can improve the uniformity and self-lubricity of the plating, which is better than chromium plating. However, electroless nickel plating on stainless steel often results in unsatisfactory bonding between the plating layer and the substrate due to poor pretreatment, which has become an urgent problem in actual production.

The original process: mechanical polishing → organic solvent degreasing →chemical degreasing → hot water washing → electrochemical degreasing → hot water washing → cold water washing→ 0%HCl → cold water washing→ 20%HCl(50℃) → cold water washing → flash plating Nickel → electroless nickel plating.

Disadvantages of the original process: the effect of using HCL alone to remove the oxide scale is not good; the flash nickel plating of complicated shapes affects the uniformity of electroless nickel plating due to poor coverage; the longer process may cause the fresh surface of stainless steel to be re-oxidized. Film; flash nickel plating solution is easy to pollute chemical nickel plating solution, etc. To this end, someone improved the process.

Improved process flow: the polishing and degreasing process is the same as the original process → mixed acid removal film (25%HCl+8%HNO3+10%HF) → cold water washing → activation (10%HCl+5%NH4F, 60℃) → hot water washing → Electroless Nickel.

The advantages of the improved process:

1.     Use mixed acid to remove the insoluble FeCrO4 oxide film, Si, SiO2 on the surface of the stainless steel, and enhance the chemical activity of the surface of the substrate，

2.     The process is simplified to avoid the fresh surface of the stainless steel from being re-oxidized，

3.     The preheating process of the substrate is increased , Eliminate the stress caused by the temperature difference between the plating layer and the substrate. Therefore, the electroless nickel plating has a good bonding force with the substrate, and the plating speed is fast.

Source: tubingchina.com