Q235B Carbon Structural Steel Plate

Q235 is a plain carbon structural steel that is used throughout China. It is also known as Q235A, Q235B, Q235C, and Q235D. Since it is mild steel, it is utilized in production without heat treatment. The Q designates the yield point, and the 235 indicates the yield strength. It has good plasticity and weldability.

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Product Description

What is Q235B steel?

Q235 is a plain carbon structural steel that is used throughout China. It is also known as Q235A, Q235B, Q235C, and Q235D. Since it is mild steel, it is utilized in production without heat treatment. The Q designates the yield point, and the 235 indicates the yield strength. It has good plasticity and weldability.

Q235B steel Equivalent materials

GB Q235B mild Steel is a Chinese standard Q235 steel series of low carbon structural steel, Q235 steel series has A, B, C, D, and E quality grade. GB Q235B steel is equivalent to the European standard of DIN EN S235JR.

Q235A, Q235B, Q235C, Q235D Steel Chemical Composition

Chemical composition and mechnical property

Mechnical property for Q235B Carbon steel

Thickness (mm)
Q235B	≤ 16	> 16 ≤ 40	> 40 ≤ 60	> 60 ≤ 100	> 100 ≤ 150	> 150
Yield strength (≥Mpa)	235	225	215	215	195	185
Tensile strength (Mpa)	370-500

Chemical composition for Q235B Carbon steel (Heat Analysis Max%)

Main chemical elements composition of Q235B
C	Si	Mn	P	S
0.20	0.35	1.40	0.045	0.045

Applications of Q235B steel

Q235B steel is low-carbon structural steel, it is used for welding, bolt connection, and riveting structure. Buildings, Bridges, ships, vehicle structures, manufacturing a variety of tools and cutters, mold and measuring tools, etc.

What is the difference between S275JR material and domestic Q235B material steel plate

1. Different chemical composition

The chemical composition of S275JR material includes: carbon, manganese, phosphorus, sulfur, nitrogen, copper, etc.

The chemical composition of domestic Q235B material includes: carbon, silicon, manganese, sulfur, phosphorus, chromium, nickel, copper, etc.

2. Different uses

The material of S275JR is general carbon structural steel.

The domestic Q235B material is carbon steel for special purposes, such as bridge steel, marine steel, etc. It is mainly used for welded structural parts with high quality requirements in construction and bridge engineering.

3. Different experimental techniques

S275JR is usually not subjected to heat treatment. If required, impact energy tests at room temperature of 20°C, 0°C, and -20°C can also be performed.

Q235B is for impact test at room temperature, V-notch, design pressure P≤1.6MPa, and operating temperature is 0～350℃.

4. Different performance

S275JR is generally steel rods, steel plates, steel strips, wire rods, and forgings with excellent strength.

Q235B has certain elongation, strength, good toughness and castability, and is easy to punch and weld.

If you want to learn about or purchase other structural steel plates from GNEE, you can send an email to [email protected]. We will be very happy to serve you.

Grades Of Carbon and Low-alloy High-strength Steels Supplied By GNEE
ASTM/ASME	ASTM A36/A36M	ASTM A36
	ASTM A283/A283M	ASTM A283 Grade A	ASTM A283 Grade B	ASTM A283 Grade C	ASTM A283 Grade D
	ASTM A514/A514M	ASTM A514 Grade A	ASTM A514 Grade B	ASTM A514 Grade C	ASTM A514 Grade E
		ASTM A514 Grade F	ASTM A514 Grade H	ASTM A514 Grade J	ASTM A514 Grade K
		ASTM A514 Grade M	ASTM A514 Grade P	ASTM A514 Grade Q	ASTM A514 Grade R
		ASTM A514 Grade S	ASTM A514 Grade T
	ASTM A572/A572M	ASTM A572 Grade 42	ASTM A572 Grade 50	ASTM A572 Grade 55	ASTM A572 Grade 60
	ASTM A572/A572M	ASTM A572 Grade 65
	ASTM A573/A573M	ASTM A573 Grade 58	ASTM A573 Grade 65	ASTM A573 Grade 70
	ASTM A588/A588M	ASTM A588 Grade A	ASTM A588 Grade B	ASTM A588 Grade C	ASTM A588 Grade K
	ASTM A633/A633M	ASTM A633 Grade A	ASTM A633 Grade C	ASTM A633 Grade D	ASTM A633 Grade E
	ASTM A656/A656M	ASTM A656 Grade 50	ASTM A656 Grade 60	ASTM A656 Grade 70	ASTM A656 Grade 80
	ASTM A709/A709M	ASTM A709 Grade 36	ASTM A709 Grade 50	ASTM A709 Grade 50S	ASTM A709 Grade 50W
		ASTM A709 Grade HPS 50W	ASTM A709 Grade HPS 70W	ASTM A709 Grade 100	ASTM A709 Grade 100W
		ASTM A709 Grade HPS 100W
	ASME SA36/SA36M	ASME SA36
	ASME SA283/SA283M	ASME SA283 Grade A	ASME SA283 Grade B	ASME SA283 Grade C	ASME SA283 Grade D
	ASME SA514/SA514M	ASME SA514 Grade A	ASME SA514 Grade B	ASME SA514 Grade C	ASME SA514 Grade E
		ASME SA514 Grade F	ASME SA514 Grade H	ASME SA514 Grade J	ASME SA514 Grade K
		ASME SA514 Grade M	ASME SA514 Grade P	ASME SA514 Grade Q	ASME SA514 Grade R
		ASME SA514 Grade S	ASME SA514 Grade T
	ASME SA572/SA572M	ASME SA572 Grade 42	ASME SA572 Grade 50	ASME SA572 Grade 55	ASME SA572 Grade 60
	ASME SA572/SA572M	ASME SA572 Grade 65
	ASME SA573/SA573M	ASME SA573 Grade 58	ASME SA573 Grade 65	ASME SA573 Grade 70
	ASME SA588/SA588M	ASME SA588 Grade A	ASME SA588 Grade B	ASME SA588 Grade C	ASME SA588 Grade K
	ASME SA633/SA633M	ASME SA633 Grade A	ASME SA633 Grade C	ASME SA633 Grade D	ASME SA633 Grade E
	ASME SA656/SA656M	ASME SA656 Grade 50	ASME SA656 Grade 60	ASME SA656 Grade 70	ASME SA656 Grade 80
	ASME SA709/SA709M	ASME SA709 Grade 36	ASME SA709 Grade 50	ASME SA709 Grade 50S	ASME SA709 Grade 50W
		ASME SA709 Grade HPS 50W	ASME SA709 Grade HPS 70W	ASME SA709 Grade 100	ASME SA709 Grade 100W
		ASME SA709 Grade HPS 100W
EN10025	EN10025-2	EN10025-2 S235J0	EN10025-2 S275J0	EN10025-2 S355J0	EN10025-2 S355K2
		EN10025-2 S235JR	EN10025-2 S275JR	EN10025-2 S355JR	EN10025-2 S420J0
		EN10025-2 S235J2	EN10025-2 S275J2	EN10025-2 S355J2
	EN10025-3	EN10025-3 S275N	EN10025-3 S355N	EN10025-3 S420N	EN10025-3 S460N
	EN10025-3	EN10025-3 S275NL	EN10025-3 S355NL	EN10025-3 S420NL	EN10025-3 S460NL
	EN10025-4	EN10025-4 S275M	EN10025-4 S355M	EN10025-4 S420M	EN10025-4 S460M
	EN10025-4	EN10025-4 S275ML	EN10025-4 S355ML	EN10025-4 S420ML	EN10025-4 S460ML
	EN10025-6	EN10025-6 S460Q	EN10025-6 S460QL	EN10025-6 S460QL1	EN10025-6 S500Q
		EN10025-6 S500QL	EN10025-6 S500QL1	EN10025-6 S550Q	EN10025-6 S550QL
		EN10025-6 S550QL1	EN10025-6 S620Q	EN10025-6 S620QL	EN10025-6 S620QL1
		EN10025-6 S690Q	EN10025-6 S690QL	EN10025-6 S690Q1	EN10025-6 S890Q
		EN10025-6 S890QL	EN10025-6 S890QL1	EN10025-6 S960Q	EN10025-6 S960QL
JIS	JIS G3101	JIS G3101 SS330	JIS G3101 SS400	JIS G3101 SS490	JIS G3101 SS540
	JIS G3106	JIS G3106 SM400A	JIS G3106 SM400B	JIS G3106 SM400C	JIS G3106 SM490A
		JIS G3106 SM490YA	JIS G3106 SM490B	JIS G3106 SM490YB	JIS G3106 SM490C
		JIS G3106 SM520B	JIS G3106 SM520C	JIS G3106 SM570
DIN	DIN 17100	DIN17100 St52-3	DIN17100 St37-2	DIN17100 St37-3	DIN17100 RSt37-2
	DIN 17100	DIN17100 USt37-2
	DIN 17102	DIN17102 StE315	DIN17102 EStE315	DIN17102 TStE315	DIN17102 WStE315
		DIN17102 StE355	DIN17102 EStE355	DIN17102 TStE355	DIN17102 WStE355
		DIN17102 StE380	DIN17102 EStE380	DIN17102 TStE380	DIN17102 WStE380
		DIN17102 StE420	DIN17102 EStE420	DIN17102 TStE420	DIN17102 WStE420
		DIN17102 StE460	DIN17102 EStE460	DIN17102 TStE460	DIN17102 WStE460
		DIN17102 StE500	DIN17102 EStE500	DIN17102 TStE500	DIN17102 WStE500
		DIN17102 EStE285
GB	GB/T700	GB/T700 Q235A	GB/T700 Q235B	GB/T700 Q235C	GB/T700 Q235D
	GB/T700	GB/T700 Q275
	GB/T1591	GB/T1591 Q345A	GB/T1591 Q390A	GB/T1591 Q420A	GB/T1591 Q420E
		GB/T1591 Q345B	GB/T1591 Q390B	GB/T1591 Q420B	GB/T1591 Q460C
		GB/T1591 Q345C	GB/T1591 Q390C	GB/T1591 Q420C	GB/T1591 Q460D
		GB/T1591 Q345D	GB/T1591 Q390D	GB/T1591 Q420D	GB/T1591 Q460E
		GB/T1591 Q345E	GB/T1591 Q390E
	GB/T16270	GB/T16270 Q550C	GB/T16270 Q550D	GB/T16270 Q550E	GB/T16270 Q550F
		GB/T16270 Q620C	GB/T16270 Q620D	GB/T16270 Q620E	GB/T16270 Q620F
		GB/T16270 Q690C	GB/T16270 Q690D	GB/T16270 Q690E	GB/T16270 Q690F
		GB/T16270 Q800C	GB/T16270 Q800D	GB/T16270 Q800E	GB/T16270 Q800F
		GB/T16270 Q890C	GB/T16270 Q890D	GB/T16270 Q890E	GB/T16270 Q890F
		GB/T16270 Q960C	GB/T16270 Q960D	GB/T16270 Q960E	GB/T16270 Q960F
		GB/T16270 Q500