SAPH400 Steel For Automobile
The products are used for manufacturing automobile girders, beams, wheels, automobile transmission shaft tubes, automobile axle housings and other structures.
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PRODUCT DESCRIPTION

Automotive steel coil strip automobile steel plate sheet

Q/BQB 310 continuously hot rolled steel sheet and strip for automobile structure use

Grades: SAPH310, SAPH370, SAPH400, SAPH440, SPFH540, SPFH590, SPFH780, B440QZR, B480QZR, QStE340TM, QStE380TM, QStE420TM, QStE460TM, QStE500TM, QStE550TM, QStE600TM, QStE650TM, QStE700TM

Q/BQB 310 standard is applicable to the carbon and microalloy steel hot continuous rolling strip with good cold forming performance, as well as the steel plate and steel strip cut horizontally and vertically. The products are used for manufacturing automobile girders, beams, wheels, automobile transmission shaft tubes, automobile axle housings and other structures.


GradeThkApplication
SAPH310≤16mmUsed for automobile frame, wheel and other automobile structural parts requiring molding processing performance.
SAPH370, SAPH400, SAPH440≤16mm
SPFH540, SPFH590≤14mmUsed for automobile frame, wheel and other automobile structural parts requiring good forming and processing performance and high strength.
SPFH780≤8mm
QStE340TM, QStE380TM≤14mmUsed for structural parts such as automobile girders, square tubes and round tubes that require good cold forming performance and high strength.
QStE420TM, QStE460TM
QStE500TM, QSt E550TM
QStE600TM, QStE650TM≤12mm
QStE700TM
B440QZR, B480QZR≤8mmFor manufacturing automobile transmission shaft tube.
For hot-rolled pickling surface steel plate and strip, the nominal thickness t ≤ 8.0mm.

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Q/BQB310 Automotive Steel Coil / Sheet Chemical Composition
GradeCSiMnPSAlt
SAPH310≤0.10≤0.30≤0.80≤0.025≤0.020≥0.010
SAPH370≤0.21≤0.30≤1.00≤0.025≤0.020≥0.010
SAPH400≤0.21≤0.30≤1.40≤0.025≤0.020≥0.010
SAPH440≤0.21≤0.30≤1.60≤0.025≤0.020≥0.010
SPFH540≤0.15≤0.50≤1.80≤0.025≤0.020≥0.010
SPFH590≤0.18≤0.60≤2.00≤0.025≤0.020≥0.010
SPFH780≤0.20≤1.00≤2.10≤0.025≤0.020≥0.010
B440QZR≤0.12≤0.50≤1.30≤0.025≤0.020
B480QZR≤0.16≤0.50≤1.50≤0.025≤0.020
Q/BQB310 Automotive Steel Coil / Sheet Chemical Composition
GradeCMnSiSTiMoBOther
QStE340TM0.121.300.500.0200.15

P 0.025
Alt≥0.015
Nb 0.09
V 0.20
QStE380TM0.121.400.500.0200.15

QStE420TM0.121.500.500.0200.15

QStE460TM0.121.600.500.0200.15

QStE500TM0.121.700.500.0200.15

QStE550TM0.121.800.500.0150.15

QStE600TM0.121.900.500.0150.220.500.005
QStE650TM0.122.000.600.0150.220.500.005
QStE700TM0.122.100.600.0150.220.500.005
Q/BQB310Yield StrengthTensileElongation (%)
Steel(Mpa)Strength≥1.5≥2≥2.5≥3.15≥4Thk
GradeThk<6|6-8|≥8mm(Mpa)<2<2.5<3.15<4<6.3≥6.3
SAPH310≥185|≥185|≥175≥310≥33≥34≥36≥38≥40≥41
SAPH370≥225|≥225|≥215≥370≥32≥33≥35≥36≥37≥38
SAPH400≥255|≥235|≥235≥400≥31≥32≥34≥35≥36≥37
SAPH440≥305|≥295|≥275≥440≥29≥30≥32≥33≥34≥35
Q/BQB310YieldTensileElongation (%)
GradeStrengthStrengtht<2mm2-2.52.5-3.25t≥3.25mm
SPFH540≥355 Mpa≥540 Mpa≥21≥22≥23≥24
SPFH590≥420 Mpa≥590 Mpa≥19≥20≥21≥22
SPFH780≥675 Mpa≥780 Mpa≥14≥14≥14≥15
GradeYield StrengthTensile StrengthElongation
B440QZR≥320 Mpa440-570 Mpa≥15%
B480QZR≥355 Mpa480-580 Mpa≥21%
Q/BQB310YieldTensileElongationElongationEquivalent
SteelStrengthStrengtht<3mmt≥ 3mmGrade
Grade(Mpa)(Mpa)(%)(%)
QStE340TM≥340420-540≥19≥25S355MC
QStE380TM≥380450-590≥18≥23
QStE420TM≥420480-620≥16≥21S420MC
QStE460TM≥460520-670≥14≥19S460MC
QStE500TM≥500550-700≥12≥17S500MC
QStE550TM≥550600-760≥12≥16S550MC
QStE600TM≥600650-820≥11≥15S600MC
QStE650TM≥650700-880≥10≥14S650MC
QStE700TM≥700750-950≥10≥13S700MC
StandardAutomotive / Automobile Steel Grades
JIS G3113SAPH310SAPH370SAPH400SAPH440
EN 10149-2S315MCS355MCS420MCS460MC
S500MCS550MCS600MCS650MC
S700MCS900MCS960MC
Q/BQB 310SAPH310SAPH370SAPH400SAPH440
SPFH540SPFH590SPFH780QStE340TM
QStE380TMQStE420TMQStE460TMQStE500TM
QStE550TMQStE600TMQStE650TMQStE700TM
B440QZRB480QZR

SEW092QStE260NQStE340TMQStE340NQStE380TM
QStE380NQStE420TMQStE420NQStE460TM
QStE460NQStE500TMQStE500NQStE550TM


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