No Commodity Composition Mechanical Properties 1 Hollow Bar BS M20

Transcription

1 1 Hollow Bar BS M20 Chemical composition; C :0.17~0.24 [2] Mechanical properties; Tensile strength σb (MPa): 450(46) Yield strength σs (MPa): 275(28) elongation δ5 (%): 24 Area reduction ψ (%): 50 hardness :Not heat treatment, 197HB [3] Heat treatment specification: normalizing,910 2 Hollow Bar BS A47 3 Hollow Bar BS H20 45#, Average carbon content: %, Average amount of silicon: % Average containing manganese content: % Average sulphur<=0.035%; Average phosphorus content<=0.035%; Average chromium-contained quantity<=0.25%; Average contain nickel content<=0.2545steel carbon0.45%around. C:0.17~0.23(Allow deviation:±0.02) Si:0.15~0.40(Allow deviation:±0.03) Mn:0.60~0.90(Allow deviation:±0.04) S : 0.030(Allow deviation:+0.005) P : 0.030(Allow deviation:+0.005) Cr:0.35~0.65(Allow deviation:±0.15) Ni:0.40~0.70(Allow deviation:±0.05) (Allow deviation:+0.05) Mo:0.15~0.30(Allow deviation:±0.02) Heat treatment specification: normalizing:850, quenching:840 tempering:600 Tensile strength: 600Mpa Yield strength: 355Mpa elongation:16% shrinkage:40% Impact energy:39j Steel delivery status hardness:not more than: Not heat treatment:229hbs Annealed steel:197hbs Tensile strength σb (MPa): 1176(120) elongation δ5 (%): 9

2 4 Round bar BS M26 5 Round bar BS M55 6 Round bar BS A47 C :0.22~0.29; C :0.52~0.60 Mn:0.50~ #, Average carbon content: %, Average amount of silicon: % Average containing manganese content: % Average sulphur<=0.035%; Average phosphorus content<=0.035%; Average chromium-contained quantity<=0.25%; Average contain nickel content<=0.2545steel carbon0.45%around. Mechanical properties 25Mnperformance: Tensile strength σb (MPa): 490(50) Yield strength σs (MPa): 295(30) elongation δ5 (%): 22 Area reductionψ (%): 50 Impact energy Akv (J): 71 Impact toughness values αkv (J/cm2): 88(9) hardness:steel delivery status hardnesshbs 10/3000 Not heat treatment 207HB, Heat treatment process:900 normalizing 870 quenching, 600 tempering Tensile strength σb (MPa): 645(66) Yield strength σs (MPa): 380(39) elongation δ5 (%): 13 Area reduction ψ (%): 35 hardness:not heat treatment, 255HB;Annealing steel, 217HB Heat treatment process:,820 normalizing;,820 quenching;,600 tempering Heat treatment specification: normalizing:850, quenching:840, tempering:600 Tensile strength: 600Mpa Yield strength: 355Mpa elongation:16% shrinkage:40% Impact energy:39j Steel delivery status hardness: Not more than:1)not heat treatment:229hbs; 2 )Annealing steel: 197HBS

3 7 Round bar BS A47 8 Round bar BS M15 9 Round bar BS M40 10 Round bar BS M15 45#, Average carbon content: %, Average amount of silicon: %, Average containing manganese content: %, Average sulphur<=0.035%, Average phosphorus content<=0.035%, Average chromium-contained quantity<=0.25%, Average contain nickel content<=0.2545steel carbon0.45%around. Chemical composition (%): C :0.12~0.19 Mn :0.35~0.65 Cr : 0.25 Ni : 0.25 Cu : 0.25 Si :0.17~0.37[2] C :0.37~0.45 Chemical composition C :0.08~0.16 S :0.10~0.20 P :0.08~0.15 Heat treatment specification: normalizing:850 quenching:840 tempering:600 Tensile strength: 600Mpa Yield strength: 355Mpa elongation:16% shrinkage:40% Impact energy:39j Annealing steel:197hbs Mechanical properties Tensile strength σb (MPa): 375 Yield strengthσs (MPa): 225 elongation δ5/(%): 27 Area reductionψ/(%): 55 Steel delivery status hardnesshbs 10/3000 Not more than : Not heat treatment steel Tensile strength σb (MPa): 590(60) Yield strength σs (MPa): 355(36) elongation δ5 (%): 17 Area reduction ψ (%): 45 Impact energy Akv (J): 47 Impact toughness values αkv (J/cm2): 59(6) hardness:not heat treatment 229HB;Annealing steel 207HB Tensile strengthσb (MPa):(hot-rolled)390~540; (Cold pull)steel thickness or diameter 8~20:530~755; >20~30:510~735; >30:490~685 elongation δ5 (%):(hot-rolled) 22;(cold-rolled) 7.0 hardness :(hot-rolled) 170HB;(Cold pull)152~217hb

4 11 Round bar BS M15 12 Round bar BS M15 13 Round bar BS M07 14 Round bar BS H37 15 Round bar BS M36 C :0.08~0.16 S :0.10~0.20 P :0.08~0.15 C :0.08~0.16 S :0.10~0.20 P :0.08~0.15 C : P: S : Mn : y15 Si : 0.15 Indicated carbon (mass fraction) 0.34% 0.41% guarantee its quench-hardening ability ~ 1.5% of Mn - Mo piece. modified steel C :0.30~0.37 Si: 0.40 Mn:0.60~0.90 Cr:0.90~1.20 Cu: Tensile strengthσb (MPa):(hot-rolled)390~540; (Cold pull)steel thickness or diameter: when 8~20:530~755; >20~30: 510~735; >30: 490~685 elongation δ5 (%):(hot-rolled) 22; (cold-rolled) 7.0 hardness :(hot-rolled) 170HB;(Cold pull)152~217hb Mechanical properties : Tensile strength σb (MPa):(hot-rolled)390~540; (Cold pull)steel thickness or diameter 8~20:530~755; >20~30:510~735; >30:490~685 elongation δ5 (%):(hot-rolled) 22;(cold-rolled) 7.0 hardness :(hot-rolled) 170HB;(Cold pull)152~217hb Tensile strength σb (MPa):(hot-rolled)390~540; (Cold pull)steel thickness or diameter:if 8~20 :530~755; if>20~30 :510~735; if>30 :490~685, elongation δ5 (%):(hot-rolled) 22;(cold-rolled) 7.0, σb (MPa): 930(95) σs (MPa): 735(75) δ5 (%): 11 ψ (%): 45 Akv (J): 47 αkv (J/cm2): 59(6) hardness : 207HB

5 16 Round bar BS M36 17 Round bar BS M40 18 Round bar BS H20 C :0.32~0.40 Mn:0.40~0.70 S :Allow residual content P :Allow residual content Cr:0.80~1.10 Ni:Allow residual content Cu:Allow residual content Mo:0.15~0.25 Chemical composition : C :0.37~0.44 Mn:0.50~0.80 S : P : Cr:0.60~0.90 Ni:1.25~1.65 Mo:0.15~0.25 Mn C :0.17~0.23(Allow deviation:±0.02) Si:0.15~0.40(Allow deviation:±0.03) Mn:0.60~0.90(Allow deviation:±0.04) S : 0.030(Allow deviation:+0.005) P : 0.030(Allow deviation:+0.005) Cr:0.35~0.65(Allow deviation:±0.15) Ni:0.40~0.70(Allow deviation:±0.05) (Allow deviation:+0.05) Mo:0.15~0.30(Allow deviation:±0.02) Tensile strength σb (MPa): 985(100) Yield strength σs (MPa): 835(85) elongation δ5 (%): 12 Impact energy Akv (J): 63 hardness : 229HB Heat treatment specification:quenching850,oil cold;tempering550,water-cooling Oil cold Tensile strength σb (MPa):933~1011 Yield strength σ0.2 (MPa):832~899 elongation δ5 (%):19~20 Area reduction ψ (%):53~64 Impact energy Akv (J):117 Impact toughness values αku (J/cm2):144~172 hardness :274~303HB Sample size:smooth sample Heat treatment specification:900 normalizing,850 Oil quenching,620 tempering,oil cold Metallographic organization:tempering saxhlet body Tensile strength σb (MPa): 1176(120) elongation δ5 (%): 9

6 19 Round bar BS M15 20 Round bar BS M20 C :0.17~0.25 S :0.08~0.15 P : 0.06 C :0.17~0.24 [2] Tensile strength σb (MPa):(hot-rolled)450~600; (Cold pull)steel thickness or diameter:if 8~20:570~785; if>20~30:530~745; if>30:510~705 elongation δ5 (%):(hot-rolled) 20;(cold-rolled) 7.0 Area reduction ψ (%):(hot-rolled) 30 hardness :(hot-rolled) 175HB;(cold-rolled)167~217HB Tensile strength σb (MPa): 450(46) Yield strength σs (MPa): 275(28) elongation δ5 (%): 24 Area reduction ψ (%): 50 hardness : Not heat treatment, 197HB [3] Heat treatment specification:normalizing, Flat bar BS A60 22 Flat bar BS4360 (1979) GRADE 50B DIN Cr C :0.62~0.70 Mn:0.90~1.20 C 0.20 Si : 0.55 Mn :1.00~1.70 Cr 0.30 P 0.04 S Nb: V Ti: Cr3Spring steel mechanical properties: Tensile strength σb (MPa): 980(100) Yield strength σs (MPa): 784(80) elongation δ10 (%): 8 Area reduction ψ (%): 30 hardness :hot-rolled, 302HB;Cold pull+heat treatment, 321H

7 23 Hex bar BS M40 24 Hex bar BS M15 25 Hex bar BS M36 C :0.37~0.45 C :0.17~0.25 S :0.08~0.15 P : 0.06 C :0.32~0.40 Mn:0.40~0.70 S :Allow residual content P :Allow residual content Cr:0.80~1.10 Ni:Allow residual content Cu:Allow residual content Mo:0.15~0.25 Tensile strength σb (MPa): 590(60) Yield strength σs (MPa): 355(36) elongation δ5 (%): 17 Area reduction ψ (%): 45 Impact energy Akv (J): 47 Impact toughness values αkv (J/cm2): 59(6) hardness:not heat treatment 229HB; Annealing steel 207HB Tensile strength σb (MPa):(hot-rolled)450~600; (Cold pull)steel thickness or diameter 8~20:570~785; >20 ~30:530~745; >30:510~705 elongation δ5 (%):(hot rolled) 20;(cold-rolled) 7.0 Area reduction ψ (%):(hot-rolled) 30 hardness :(hot-rolled) 175HB;(cold-rolled)167~217HB Tensile strength σb (MPa): 985(100) Yield strength σs (MPa): 835(85) elongation δ5 (%): 12 Impact energy Akv (J): 63 hardness : 229HB Heat treatment specification:quenching850,oil cold;tempering550,water-cooling Oil cold