Q215 B

Q215 B Special Alloy

Chemical composition%of the ladle analysis of gradeQ215 B

C(％)Si(％)Mn(％)P(％)S(％)Cr(％)Ni(％)Cu(%)
0.09～0.15≤0.300.25～0.55≤0.045≤0.045≤0.30≤0.30≤0.30

Mechanics performance


The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm |≤ 16:215
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 16 ~ 40:205
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 40 to 60:195
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 60 ~ 100:185
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 100 ~ 150:175
The yield point σ s/MPa (no less) than in steel different thickness or diameter/mm | > 150:165
 

Cold bending property


Sample direction: horizontal
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | than 60: d = a
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 60 ~ 100: d = 2 a
180 ° of cold bending test b = 2 a different thickness or in steel diameter/mm | > 100 ~ 200: d = 2.5 a

Performance characteristics and applications


High plasticity and toughness and welding performance, good pressure processing performance, but low strength.
Load small parts, spacers, rivets, the anchor bolt, colter, funnel, roof, low carbon steel wire, plates, welded pipe, bars, split cotters, and stamping parts, components etc.

 

GB/T 700-1988 standard and GB 700-1979 standard steel grade comparison

GB/T 700-1988 standadr:

Regardless of rank, the chemical composition and mechanical properties (σ s, σ b, the delta and the cold bending) are to be guaranteed

Rolling plate and rod of products, the mechanical properties of the guarantee condition, can according to product characteristics and application requirements, in the standard separately

GB 700-1979 standard

A1 the mechanical properties of the steel guarantee (σ s, σ b, the delta and the cold bending), B1 steel guarantee the chemical composition of the same with Q195

A1 steel cold bending test is additional guarantee conditions

1 no special steel of steel

Mechanical properties of gradeQ215 B

Proof strength
Rp0.2(MPa)		 Tensile strength
Rm(MPa)		 Impact energy
KV(J)		 Elongation at fracture
A(%)		 Reduction in cross section on fracture
Z(%)		 As-Heat-Treated Condition Brinell hardness(HBW)
741(≥) 816(≥) 32 24 32 Solution and Aging,Annealing,Ausaging,Q+T,etc 313

Physical properties of grade Q215 B

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J/kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
672(≥) 562(≥) 24 42 21 Solution and Aging,Annealing,Ausaging,Q+T,etc 324
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0)N/mm2		 Creep rupture strength
(10000h)
(Rp1,0)N/mm2
381 697 656

Q215 B Range of products

Product type Products Dimension Processes Deliver Status
Plates/Sheets Plates/Sheets 0.08-200mm(T)*W*L Forging,hot rolling and cold rolling Annealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel Bar Round Bar,Flat Bar,Square Bar Φ8-1200mm*L Forging,hot rolling and cold rolling,Cast Black,Rough Turning,Shot Blasting,
Coil/Strip Steel Coil/Steel Strip 0.03-16.0x1200mm Cold-Rolled&Hot-Rolled Annealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/Tubes Seamless Pipes/Tubes,Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion,Cold Drawn,Welded Annealed,Solution and Aging,Q+T,ACID-WASHED

Equivalent Grade

1 Q215 2 Q215 B 3 Q215 4 Q215 5 Q195 6 Q235 7 Q235 B 8 Q235 C 9 Y1Cr18Ni9 10 1Cr18Ni9 11 1Cr18Mn10Ni5Mo3N 12 1Cr17Ni7 13 Y1Cr18Ni9Se 14 0Cr18Ni9 15 00Cr19Ni10 16 1Cr17Mn6Ni5N 17 1Cr18Mn8Ni5N 18 0Cr19Ni9N

Equivalent Products

1 SKD-11 Cold working die steel 2 X165CrMoV12 Cold working die steel 3 17-4ph steel wire 4 A387 F5 / Grade 5 Coil / Sheet 5 D2 Round Bar 6 P20 tool steel round bar 7 D3 tool steel round bar/plate 8 T30402/X155CrVMo121 Die Steel Sheet 9 1.4980 Round Bar 10 DT413 / 4Cr5MoSiV1MOD

Product shapes we supply:

Q215 B Steel Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
SkD-11 Round Bar Stock Φ30-Φ350 Round Bar Kgs 3102 Hot-Rolled+Annealed+black Enquiry
17-4PH Coil Stock 0.08*200mm Coil or Strip Kgs 1623 Cold-Rolled+Annealed Enquiry
D2 Round bar Φ25-Φ380mm Round Bar Kgs 45325 Hot-Rolled+Annealed+black Enquiry
Cr8 flat bar 12*355*L Flat or Square bar Kgs 3965 Forged+Annealed+black Enquiry
17-4PH Round Bar Φ5-300mm*L Round Bar Kgs 46958 Hot-Rolled+Annealed+black Enquiry
17-4PH plate 8-45*1200*3000mm Plate or Sheet Tons 4.9 Hot-Rolled+Annealed+black Enquiry
Cr12MoV 12-160(T)*310-610(W)*L Plate or Sheet Tons 12.38 Hot-Rolled+Annealed+black Enquiry
1.2601 12-160(T)*310-610(W)*L Plate or Sheet Tons 11.22 Hot-Rolled+Annealed+black Enquiry
IncoloyA-286 / GH 2132 Stock Φ8-65mm*L Round Bar Kgs 489 Hot-Rolled+Annealed+black Enquiry
Incoloy800 round bar Φ115*1400 Round Bar Kgs 169 Hot-Rolled+Annealed+black Enquiry
17-7PH / 631 Coil & Strip, Sheet Stock 0.3-3.0*10-180mm Coil or Strip Kgs 1236.22 Cold-Rolled+Annealed Enquiry
X22CrMoV12-1 / 1.4923 Φ17mm Round Bar Kgs 300 Hot-Rolled+Annealed+black Enquiry
1.2083 Forged Plate T:105-185mm*W:510*L Plate or Sheet Tons 26 Forged+QT Enquiry
X22CrMoV12-1 / 1.4923 Φ30mm Round Bar Kgs 300 Hot-Rolled+Annealed+black Enquiry
1.4882 strip/sheet/plate stock 3.5x200x1000-2000mm Coil or Strip Kgs 200 Cold-Rolled+Annealed Enquiry
A387 F5 & Grade 5 sheet Coil strip 0.5mmx200mmxC Coil or Strip Tons 3 Cold-Rolled+Annealed Enquiry
A387 F5 & Grade 5 Hot Coil stock Select Tons 3 Hot-Rolled+Annealed+black Enquiry
T45Cr5Si3 Round Bar Dia.40mm Round Bar Kgs 500 Hot-Rolled+Annealed+black Enquiry
UNS K30960(VIM+ESR) Bright Round Bar Dia.22mm Round Bar Kgs 50 Hot-Rolled+Annealed+black Enquiry
SA-437 Grade B4B/SUS 616 /422 Forged Bar Dia.160xL Round Bar Kgs 2120 Forged+QT Enquiry