Thép ống đúc tiêu chuẩn JIS G3445 bao gồm các lớp thép
Thép ống đúc STKM 11A,
Thép ống đúc STKM 12A,
Thép ống đúc STKM 12B,
Thép ống đúc STKM 12C,
Thép ống đúc STKM 13A,
Thép ống đúc STKM 13B,
Thép ống đúc STKM 13C,
Thép ống đúc STKM 14A,
Thép ống đúc STKM 14B,
Thép ống đúc STKM 14C,
Thép ống đúc STKM 15A,
Thép ống đúc STKM 15C,
Thép ống đúc STKM 16A,
Thép ống đúc STKM 16C,
Thép ống đúc STKM 17A,
Thép ống đúc STKM 17C,
Thép ống đúc STKM 18A,
Thép ống đúc STKM 18B,
Thép ống đúc STKM 18C,
Thép ống đúc STKM 19A,
Thép ống đúc STKM 19C,
Thép ống đúc STKM 20A,
Grade | Designation | |
Grade 11 | A | STKM 11A |
Grade 12 | A | STKM 12A |
B | STKM 12B | |
C | STKM 12C | |
Grade 13 | A | STKM 13A |
B | STKM 13B | |
C | STKM 13C | |
Grade 14 | A | STKM 14A |
B | STKM 14B | |
C | STKM 14C | |
Grade 15 | A | STKM 15A |
C | STKM 15C | |
Grade 16 | A | STKM 16A |
C | STKM 16C | |
Grade 17 | A | STKM 17A |
C | STKM 17C | |
Grade 18 | A | STKM 18A |
B | STKM 18B | |
C | STKM 18C | |
Grade 19 | A | STKM 19A |
C | STKM 19C | |
Grade 20 | A | STKM 20A |
NUBER | GRADE | NUBER | GRADE | NUBER | GRADE | NUBER | GRADE | |
D 3517 | Grade 11 A | STKM 11 A | A513 | MT1010 | G-3445 | STKM11A | - | - |
A519 | MT1010 | |||||||
| Grade 12A | STKM 12 A | A513 | MT1015 | | STKM12A | 980 | CDS-3 |
A519 | MT1015 | |||||||
Grade 12 B | STKM 12 B | - | - | STKM12B | - | - | ||
| Grade 12C | STKM 12C | A512 | MT1015 | | STKM12C | - | - |
A513 | ||||||||
| Grade 13 A | STKM 13 A | A512 | MT 1025 | | STKM13A | - | - |
A513 | MTX1025 | |||||||
A519 | MT 1025 | |||||||
Grade13B | STKM 13 B | - | - | STKM13B | 980 | CDS-4 | ||
Grade13 C | STKM 13 C | - | - | STKM13C | - | - | ||
| Grade14 A | STKM 14 A | A513 | MT1030 | | STKM14A | 1717 | CDS- 103 |
A519 | MT1030 | |||||||
Grade14 B | STKM 14 B | - | - | STKM14B | - | - | ||
Grade14 C | STKM 14 C | - | - | STKM14C | - | - | ||
| Grade15 A | STKM 15 A | A513 | MT1033 | | STKM15A | 1717 | CDS- 105 |
Grade15 C | STKM 15 C | - | - | STKM15C | - | - | ||
Grade16 A | STKM 16 A | A519 | MT1040 | STKM16A | 980 | CDS-5 | ||
Grade16 C | STKM 16 C | - | - | STKM16C | - | - | ||
| Grade17 A | STKM 17 A | A519 | MT1050 | | STKM17A | 980 | CDS-7 |
1717 | CDS- 107 | |||||||
Grade17 C | STKM 17 C | - | - | STKM17B | - | - | ||
Grade18 A | STKM 18 A | A519 | MT1524 | STKM18A | 980 | CDS-9 | ||
Grade18 B | STKM 18 B | - | - | STKM18B | - | - | ||
Grade18 C | STKM 18 C | - | - | STKM18C | - | - | ||
Grade19 A | STKM 19 A | - | - | - | - | - | ||
Grade19 C | STKM 19 C | - | - | - | - | - | ||
Grade20 A | STKM 20 A | - | - | - | - | - |
Mức thép | Định danh | Unit % | ||||||
C max. | Si max. | Mn max | P max. | S max. | Nb or V | |||
Grade 11 | A | STKM 11A | 0.12 | 0.35 | 0.6.0 | 0.040 | 0.040 | - |
Grade 12 | A | STKM 12A | 0.20 | 0.35 | 0.60 . | 0.040 | 0.040 | - |
B | STKM 12B | |||||||
C | STKM 12C | |||||||
Grade 13 | A | STKM 13A | 0.25. | 0.35 | 0.30~0.90 | 0.040 | 0.040 | - |
B | STKM 13B | |||||||
C | STKM 13C | |||||||
Grade 14 | A | STKM 14A | 0.30 | 0.35 | 0.30~1.00 | 0.040 | 0.040 | - |
B | STKM 14B | |||||||
C | STKM 14C | |||||||
Grade 15 | A | STKM 15A | 0.25~0.35 | 0.35 | 0.30~1.00 | 0.040 | 0.040 | - |
C | STKM 15C | |||||||
Grade 16 | A | STKM 16A | 0.35~0.45 | 0.40 | 0.40~1.00 | 0.040 | 0.040 | - |
C | STKM 16C | |||||||
Grade 17 | A | STKM 17A | 0.45~0.55 | 0.40 | 0.40~1.00 | 0.040 | 0.040 | - |
C | STKM 17C | |||||||
Grade 18 | A | STKM 18A | 0.18. | 0.55 | 1.50 | 0.040 | 0.040 | - |
B | STKM 18B | |||||||
C | STKM 18C | |||||||
Grade 19 | A | STKM 19A | 0.25 | 0.55 | 1.5 | 0.040 | 0.040 | - |
C | STKM 19C | |||||||
Grade 20 | A | STKM 20A | 0.25. | 0.55 | 1.60 . | 0.040 | 0.040 | 0.15 |
Designation | Elongation % | Bending strength |
Độ bền kéo N/П {kgf/П} | Giới hạn chảy f N/П {kgf/П} | Flattening strength Distance between flat plates (H) (D is outside dia. of the tube) | |||||
No. 4, No. 11 No. 12 thử nghiệm dọc chiều dài vật mẫu | No. 4, No. 5 Thử nghiệm theo chiều ngang vật mẫu | Bend angle | Inside radius (D is outside dia. of the tube) | ||||
STKM11A | 290{30} min. | - | 35 min. | 30 min. | 1/2 D | 180 | 4 D |
STKM12A | 340{35} min. | 175{18} min. | 35 min. | 30 min. | 2/3 D | 90 | 6 D |
STKM12B | 390{40} min. | 275{28} min. | 25 min. | 20 min. | 2/3 D | 90 | 6 D |
STKM12C | 470{48} min. | 355{36} min. | 20 min. | 15 min. | - | - | - |
STKM13A | 370{38} min. | 215{22} min. | 30 min. | 25 min. | 2/3 D | 90 | 6 D |
STKM13B | 440{45} min. | 305{31} min. | 20 min. | 15 min. | 3/4 D | 90 | 6 D |
STKM13C | 510{52} min. | 380{39} min. | 15 min. | 10 min. | - | - | - |
STKM14A | 410{42} min. | 245{25} min. | 25 min. | 20 min. | 3/4 D | 90 | 6 D |
STKM14B | 500{51} min. | 355{36} min. | 15 min. | 10 min. | 7/8 D | 90 | 8 D |
STKM14C | 550{56} min. | 410{42} min. | 15 min. | 10 min. | - | - | - |
STKM15A | 470{48} min. | 275{28} min. | 22 min. | 17 min. | 3/4 D | 90 | 6 D |
STKM15C | 580{59} min. | 430{44} min. | 12 min. | 7 min. | - | - | - |
STKM16A | 510{52} min. | 325{33} min. | 20 min. | 15 min. | 7/8 D | 90 | 8 D |
STKM16C | 620{63} min. | 460{47} min. | 12 min. | 7 min. | - | - | - |
STKM17A | 550{56} min. | 345{35} min. | 20 min. | 15 min. | 7/8 D | 90 | 8 D |
STKM17C | 650{66} min. | 480{49} min. | 10 min. | 5 min. | - | - | - |
STKM18A | 440{45} min. | 275{28} min. | 25 min. | 20 min. | 7/8 D | 90 | 6 D |
STKM18B | 490{50} min. | 315{32} min. | 23 min. | 18 min. | 7/8 D | 90 | 8 D |
STKM18C | 510{52} min. | 380{39} min. | 15 min. | 10 min. | - | - | - |
STKM19A | 490{50} min. | 315{32} min. | 23 min. | 18 min. | 7/8 D | 90 | 6 D |
STKM19C | 550{56} min. | 410{42} min. | 15 min. | 10 min. | - | - | - |
STKM20A | 540{55} min. | 390{40} min. | 23 min. | 18 min. | 7/8 D | 90 | 6 D |
Phân chia | Dung sai kích thước đường kính ngoài |
No. 1 | Under 50mm ±0.5mm |
50mm or over | ±1% | ||
No. 2 | Under 50mm | ±0.25mm | |
50mm or over | ±0.5% | ||
No. 3 | Under 25mm | ±0.12mm | |
25mm or over to and excl. 40mm ±0.15mm | |||
40mm or over to and excl. 50mm ±0.18mm | |||
50mm or over to and excl. 60mm ±0.20mm | |||
60mm or over to and excl. 70mm ±0.23mm | |||
70mm or over to and excl. 80mm ±0.25mm | |||
80mm or over to and excl. 90mm ±0.30mm | |||
90mm or over to and excl.100mm ±0.40mm | |||
100mm or over | ±0.50% |
Phân chia | Dung sai độ dày ống |
No. 1 | Under 4mm |
+0.6mm | |
-0.5mm | |
4mm or over | |
15% | |
-12.50% | |
N. 2 | Under 3mm |
±0.3mm | |
3mm or over |
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