Comparison of Hot Rolled Steel Grades

In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling.
Typical uses for cold-rolled steel include metal furniture, desks, filing cabinets, tables, chairs, motorcycle exhaust pipes, computer cabinets and hardware, home appliances and components, shelving, lighting fixtures, hinges, tubing, steel drums, lawn mowers, electronic cabinetry, water heaters, metal containers, and a variety of construction-related products.

There are three different grades for cold rolled steel in China:Q195,Q215, Q235.and SPHC.

Hot Rolled Steel Designations & Grades with Comparisons:

Quality	STANDARD	STEEL GRADE
General structural steel (including chequered steel)	GB/T 700-2006 EN 10025-2004 JIS G3101-2004 ASTM A36-05 ASTM A573-05	Q235 (A/B/C/D); Q275 (A/B/C/D) S235JR (ST37-2), S235JO (ST37-3), S275JR (ST44-2) SS400; SS490 A36 Grade 65; Grade 70
Cold forming steel	GB/T 700-2006 EN 10111-2008 JIS G3131-2005	Q195; Q215 (A/B) DD11 (StW22); DD12 (StW23); DD13 (StW24) SPHC; SPHD; SPHE
High strength low alloy structural steel	GB/T 1591-2008 EN 10028-3-2003 EN 10025-2004 ASTM A572-07 ASTM A588-05	Q345 (A/B/C/D/E); Q390; Q420 P355N S420N Grade 50; Grade 60 Grade A; Grade B
Steel for boiler and other pressure vessels	GB 713-2008 ASTM A537-08 JIS G3115	Q245R (20g/20R); Q345R (16Mng/16MnR) Class 1/2/3 SPV235; SPV315; SPV355
Machine structural steel	GB/T 699-1999 EN 10083-1 JIS G4051-2005 ASTM A29-05 SAE J403-95	20#; 35#; 45# C20E; C35E; C45E S20C; S35C; S45C 1020; 1035; 1045 SAE1020; SAE1035; SAE1045
Steel for ship building	LR; ABS, BV, GL, DNV, CCS	A/B/D

For Chemical Composition & Mechanical Properties of Hot Rolled China Steel refer to the table:

	Chemical Composition %					Mechanical Properties
Steel Brand	C	SiS	Mn	P	S	Elongation %	Yield Strength Mpa	Tensile Strength Mpa
Q195	0.06-0.12	<=0.30	0.25-0.50	<=0.045	<=0.050	>=33	>=195	315-430
Q215	0.09-0.15	<=0.30	0.25-0.55	<=0.045	<=0.050	>=31	>=215	335-450
Q235	0.14-0.22	<=0.30	0.30-0.65	<=0.045	<=0.050	>=26	>=235	375-500
SPHC	0.01-0.06	<=0.05	0.19-0.50	<=0.03	0.001-0.007	>=46	>=305	>=370

Comparison of Cold Rolled Steel Grades

In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling.
Typical uses for cold-rolled steel include metal furniture, desks, filing cabinets, tables, chairs, motorcycle exhaust pipes, computer cabinets and hardware, home appliances and components, shelving, lighting fixtures, hinges, tubing, steel drums, lawn mowers, electronic cabinetry, water heaters, metal containers, and a variety of construction-related products.

There are three different grades for cold rolled steel in China:Q195,Q215 and Q235.

Cold Rolled Steel:

Quality	GB/T 11253-2007 GB/T 5213-2001	JIS G3141-2005 JIS G3101-2004	EN 10130-2006 EN 10139-1998 DIN 1623-1986	ASTM A1008 / A1008M-05
Commercial Steel	Q195	SPCC (T)	DC01/ ST12	CS TYPE A/B/C
Drawing Steel	SC1 SC2 SC3	SPCD	DC03/ ST13	DS TYPE A/B
Deep Drawing Steel		SPCE	DC04/ ST14	DDS

For Chemical Composition & Mechanical Properties of Cold Rolled China Steel refer to the table:

	Chemical Composition %					Mechanical Properties
Steel Brand	C	Si	Mn	P	S	Elongation %	Yield Strength Mpa	Tensile Strength Mpa
Q195	0.06-0.12	<=0.30	0.25-0.50	<=0.045	<=0.050	>=33	>=195	315-430
Q215	0.09-0.15	<=0.30	0.25-0.55	<=0.045	<=0.050	>=31	>=215	335-450
Q235	0.14-0.22	<=0.30	0.30-0.65	<=0.045	<=0.050	>=26	>=235	375-500

Comparison of steel grades by chemistry

Below is a table comparing steel grades from different grading systems.

Comparison of steel grades by chemistry

EN steel number	EN steel name	SAE grade	UNS	DIN	BS 970	UNI	JIS
Carbon steels
1.1141 1.0401 1.0453	C15D C18D	1010 1018		CK15 C15 C16.8	040A15 080M15 080A15 EN3B	C15 C16 1C15	S12C S15 S15CK S15C
1.0503 1.1191 1.1193 1.1194	C45	1045		C45 CK45 CF45 CQ45	060A47 080A46 080M46	C45 1C45 C46 C43	S45C S48C
1.0726 1.0727	35S20 45S20	1140/1146		35S20 45S20	212M40 En8M
1.0715 1.0736	11SMn37	1215		9SMn28 9SMn36	230M07 En1A	CF9SMn28 CF9SMn36	SUM 25 SUM 22
1.0718 1.0737	11SMnPb30 11SMnPb37	12L14		9SMnPb28 9SMnPb36	230M07 Leaded En1B Leaded	CF9SMnPb29 CF9SMnPb36	SUM 22 SUM 23 SUM 24
Alloy steels
1.7218		4130		25CrMo4 GS-25CrMo4	708A30 CDS110	25CrMo4 (KB) 30CrMo4	SCM 420 SCM 430 SCCrM1
1.7223 1.7225 1.7227 1.3563	42CrMo4	4140/4142		41CrMo4 42CrMo4 42CrMoS4 43CrMo4	708M40 708A42 709M40 En19 En19C	41CrMo4 38CrMo4 (KB) G40 CrMo4 42CrMo4	SCM 440 SCM 440H SNB 7 SCM 4M SCM 4
1.6582 1.6562	34CrNiMo6	4340		34CrNiMo6 40NiCrMo8-4	817M40 En24	35NiCrMo6 (KB) 40NiCrMo7 (KB)	SNCM 447 SNB24-1-5
1.6543 1.6523	20NiCrMo2-2	8620		21NiCrMo22 21NiCrMo2	805A20 805M20	20NiCrMo2	SNCM 200 (H)
Stainless steels
1.4310	X10CrNi18-8	301	S30100
1.4318	X2CrNiN18-7	301LN
1.4305	X8CrNiS18-9	303	S30300	X10CrNiS18-9	303S 31 En58M	X10CrNiS18-09	SUS 303
1.4301	X2CrNi19-11 X2CrNi18-10	304	S30400	X5CrNi18-9 X5CrNi18-10 XCrNi19-9	304S 15 304S 16 304S 18 304S 25 En58E	X5CrNi18-10	SUS 304 SUS 304-CSP
1.4306	X2CrNi19-11	304L	S30403		304S 11		SUS304L
1.4311	X2CrNiN18-10	304LN	S30453
1.4948	X6CrNi18-11	304H	S30409
1.4303	X5CrNi18-12	305	S30500
1.4401 1.4436	X5CrNiMo17-12-2 X5CrNiMo18-14-3	316	S31600	X5CrNiMo17 12 2 X5CrNiMo17 13 3 X5CrNiMo 19 11 X5CrNiMo 18 11	316S 29 316S 31 316S 33 En58J	X5CrNiMo17 12 X5CrNiMo17 13 X8CrNiMo17 13	SUS 316 SUS316TP
1.4404	X2CrNiMo17-12-2	316L	S31603		316S 11		SUS316L
1.4406 1.4429	X2CrNiMoN17-12-2 X2CrNiMoN17-13-3	316LN	S31653
1.4571		316Ti	S31635	X6CrNiMoTi17-12	320S 33
1.4438	X2CrNiMo18-15-4	317L	S31703
1.4541		321	S32100	X6CrNiTi18-10	321S 31		SUS321
1.4878	X12CrNiTi18-9	321H	S32109
1.4512	X6CrTi12	409	S40900
		410	S41000
1.4016		430	S43000	X6Cr17	430S 17		SUS430
		440A	S44002
1.4112		440B	S44003
1.4125		440C	S44004	X105CrMo17			SUS440C
1.4104		430F	S44020	X14CrMoS17			SUS430F
1.4539	X1NiCrMoCu25-20-5	904L	N08904
1.4547	X1CrNiMoCuN20-18-7		S31254
Tool steels
1.2363	X100CrMoV5	A-2	T30102	X100CrMoV51	BA 2	X100CrMoV5-1 KU	SKD 12
		A-3	T30103
		A-4	T30104
		A-6	T30106
		A-7	T30107
		A-8	T30108
		A-9	T30109
1.2379	X153CrMoV12	D-2		X153CrMoV12-1	BD 2	X155CrVMo12-1	SKD 11
1.2510		O-1		100MnCrW4	Bo 1	95MnWCr-5 KU

How to place an order to Chinese factory in stamping industry?

How to place an order to Chinese factory in stamping industry?

1,Prepare the drawing or samples for what you want?
2,Send inquiry to the suppliers.
3,Sign a contract with the supplier who can supply best offers and professional service.
4,Pay the tooling charge to the supplier.
5,Confirm the samples according to drawing and other requirements. 
6,Pay the payments for batch production after samples confirmed.
7,Book the ship for the products.
8,Find an agent company for custom clearance.
9,Wait for delivery.

That's all.

Product Description for Stamping Parts on B2B Website

Product Description

Item

Description

Product Name

stamping parts,sheet metal parts

Working Process

Sheet metal forming,Cutting with shear,Cutting without shear

Material

Aluminum

Brass

Bronze

Copper

Magnesium

Nickel

Stainless steel

Steel

Tin

Titanium

Zinc

Surface Treatment

hot galvanized, polishing, Zinc plating, nickel plating, chrome plating, silver plating, gold-plating, imitation gold plating, powder coating, etc.

Application (Products Scope)

Auto Parts, Machinery, Home Appliance, Electronic Products,Stationery, Computers,Power Switches,  Miniature Switches,Architecture,Commodity  and A/V Equipment, Hardware and Plastic Molds,Sports Equipment and Gifts, etc.

Certificate

ISO9001:2008,CE,ROHS,SGS

Equipments

CNC stamping/punching machine, CNC bending machine,CNC cutting machine,5-300T punching machines, welding machine, polish machine, lathe machine

Thickness

0.006 and 0.25 inches,3 to 38 Gauge

File Format

Solidworks,Pro/Engineer,Auto CAD,PDF,JPG

Service

24-hour reply to customer's enquiry

Inspection

IQC, IPQC,FQC,QA

Mould

According to the drawing or samples

Sample confirmation

Confirm the samples before batch production

Packing

Inner Plastic Bag; Outer Standard Carton Box,Or according to customer's requirement

sheet metal Stretch Forming

Stretch forming is a metal forming process in which a piece of sheet metal is stretched and bent simultaneously over a die in order to form large contoured parts. Stretch forming is performed on a stretch press, in which a piece of sheet metal is securely gripped along its edges by gripping jaws. The gripping jaws are each attached to a carriage that is pulled by pneumatic or hydraulic force to stretch the sheet. The tooling used in this process is a stretch form block, called a form die, which is a solid contoured piece against which the sheet metal will be pressed. The most common stretch presses are oriented vertically, in which the form die rests on a press table that can be raised into the sheet by a hydraulic ram. As the form die is driven into the sheet, which is gripped tightly at its edges, the tensile forces increase and the sheet plastically deforms into a new shape. Horizontal stretch presses mount the form die sideways on a stationary press table, while the gripping jaws pull the sheet horizontally around the form die.

Stretch formed parts are typically large and possess large radius bends. The shapes that can be produced vary from a simple curved surface to complex non-uniform cross sections. Stretch forming is capable of shaping parts with very high accuracy and smooth surfaces. Ductile materials are preferable, the most commonly used being aluminum, steel, and titanium. Typical stretch formed parts are large curved panels such as door panels in cars or wing panels on aircraft. Other stretch formed parts can be found in window frames and enclosures.

As a professional stamping parts manufacturer and metal parts fabricator,we have advanced equipments and machines, serious quality control, fast leading time and competitive price.Email us for more information:
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