1、GM DAEWOO Auto & Technology EDS E ngineering, GM DAEWOO Auto & Technology. Standards STAINLESS STEEL TUBES EDS-M-1808 ISSUED DATE: 1994. 06. 27 REVISEDDATE: 2004. 05. 21 VERSION: 5 EDS-M-1808 STAINLESS STEEL TUBES PAGE: 1/4 ISSUED DATE: 1994. 06. 27 REVISED DATE: 2004. 05. 21 VERSION: 5 GM DAEWOO Au
2、to & Technology 1. SCOPE This standard specifies the stainless steel tubes used by GM DAEWOO Auto & Technology Company(hereinafter referred to as the “GMDAT“). 2. MANUFACTURING METHOD 2.1. The tubes shall be manufactured by the seamless process, the automatic arc welding process or the electric resi
3、stance welding process. 2.2. The tubes shall be heat-treated as specified in Table 1 in accordance with the type. Table 1. Heat Treatment Method Type Heat treatment method Class A Solution treatment, 1010 min, rapid cooling SUS 304 TK Class C As manufactured Class A Solution treatment, 1010 min, rap
4、id cooling Austenitic series SUS 304L TK Class C As manufactured Class A Annealing, 780 950 , rapid cooling or slow cooling SUH 409 TK Class C As manufactured Class A Annealing, 700 min, air cooling or slow cooling Ferritic series SUS 430 TK Class C As manufactured Remark: However, class C may be so
5、lution-treated or annealed as required. 3. TYPE AND USE Table 2. Type and Use Type Use Applications Class A Welding or seamless tube SUS 304 TK Class C Welding tube FLEXIBLE TUBE A. Class A Welding or seamless tube SUS 304L TK Class C Welding tube FUEL PIPE. Class A Welding or seamless tube SUH 409
6、TK Class C Welding tube FRONT EXH.PIPE Class A Welding or seamless tube SUS 430 TK Class C Welding tube Structural steel tube parts requiring corrosion resistance and heat resistance. EDS-M-1808 STAINLESS STEEL TUBES PAGE: 2/4 ISSUED DATE: 1994. 06. 27 REVISED DATE: 2004. 05. 21 VERSION: 5 GM DAEWOO
7、 Auto & Technology Remark 1. SUS 304 TKC, SUH 409 TKC and SUS 430 TKC shall be for automatic arc welding or electric- resistance welding. 2. When designating seamless tubes, electric-resistance welding tubes and arc welding tubes -S, -E, -A shall be suffixed to the symbol of type. Ex) SUS 304 TKA-S
8、: SUS 304 seamless stainless steel tube. 4. QUALITY 4.1. Chemical composition Table 3. Chemical Composition Unit : wt% Type C Si Mn P S Ni Cr Others SUS 304 0.08 max. 1.00 max. 2.00 max. 0.040 max. 0.030 max. 8.00 11.00 18.00 20.00 SUS 304L 0.030 max. 1.00 max. 2.00 max. 0.045 max. 0.030 max. 9.00 1
9、3.00 18.00 20.00 N2 0.10 max. SUS 409 0.08 max. 1.00 max. 1.00 max. 0.040 max. 0.030 max. 0.60 max. 10.50 11.75 Ti6 X C% 0.75 SUS 430 0.12 max. 0.75 max. 1.00 max. 0.040 max. 0.030 max. 0.60 max. 16.00 18.00 Remark: The above values are based on ladle analysis, and tolerance of product analysis shal
10、l conform to the Table 4 of KS D 0228Product Analysis and its Tolerance for Wrought Steel 4.2. Mechanical property Table 4. Tensile Strength, Yield Strength and Elongation Elongation(%) Type Tensile strength (N/mm 2 ) Yield strength (N/mm 2 ) No 11, No. 12 SUS 304 TK 520 min. 205 min. 35 min. SUS 30
11、4L TK 481 min. 177 min. 35 min. SUH 409 TK 360 min. 175 min. 22 min. SUS 430 TK 410 min. 245 min. 20 min. Remark 1. For the class TKA, 200N/mm 2added to the values specified in Table 4 may be designated as the upper limit of the tensile strength as required. 2. When the tensile test is performed wit
12、h No. 12 test piece for tubes under 8mm in wall thickness, the minimum elongation value shall be calculated by subtracting 1.5% from the values given in Table 4 for each decrease of 1mm from 8mm thickness, and rounded-off to an integer in accordance with KS A 0021Rules for Rounding Off Numerical Val
13、ues. 3. The elongation values given in Table 4 shall not apply to the tubes 10mm or under in outside EDS-M-1808 STAINLESS STEEL TUBES PAGE: 3/4 ISSUED DATE: 1994. 06. 27 REVISED DATE: 2004. 05. 21 VERSION: 5 GM DAEWOO Auto & Technology diameter and 1mm or under in wall thickness. However, the value
14、of elongation rate shall be recorded. 4. In case of welded stainless steel tube, No. 12 test piece shall be taken from a seamless portion. 4.3. Expanding Tubing shall be capable of being expanded over a tapered mandrel having an angle of 60 until the diameter at expanded end is increased 20% without
15、 cracking or showing flaws. 4.4. Bendability The reduction area of tube shall be 6% max., when it is bent with 360 with a radius of 3D(D : Outside diameter of tube), 4.5. Flattening There shall be no cracks on the outside surface after the flattening test in accordance with Table 5. Table 3. Flatten
16、ing Test Type Flattening test Type Symbol Distance between flattening plates (D: outside diameter of tube) SUS 304(L) TKA 1/3 D Austenitic series SUS 304(L) TKC 2/3 D SUH 409 TKA 2/3 D SUH 409 TKC 3/4 D SUS 430 TKA 2/3 D Ferritic series SUS 430 TKC 3/4 D 4.6. Corrosion resistance Table 5. Corrosion
17、Resistance Type Salt Spray Test SUS 304(L) TK EDS-T-7143 144 hours grade 1 SUS 430 TK EDS-T-7143 72 hours grade 1 4.7. Weldability 4.7.1. Welded joints shall be free from harmful defects such as cracks, blowholes, uneven surface, and lots of non metallic inclusions. 4.7.2. As SUS 304(L) TK and SUS 4
18、30 TK are susceptible to integranular corrosion after welding or prolonged use at 400 or more, use of materials containing Ti or Nb is recommended where it is necessary to prevent it. EDS-M-1808 STAINLESS STEEL TUBES PAGE: 4/4 ISSUED DATE: 1994. 06. 27 REVISED DATE: 2004. 05. 21 VERSION: 5 GM DAEWOO
19、 Auto & Technology 4.8. Surface condition 4.8.1. The tubes shall be straight, and their both ends shall be at a right angle to the axes. 4.8.2. The inside and outside surfaces of the tubes shall be well-finished, and free from defects harmful to use. 5. NOTE Samples of materials or parts that follow
20、 this standard shall be approved by GMDAT Technical Center b efore mass production & delivery. In the event of any modification form this standard, it is the sole responsibility of the supplier to inform the purchaser of all such modifications. Furthermore, the supplier shall submit the modified sam
21、ple for reapproval by GMDAT Technical Center before mass production & delivery. 6. TEST 6.1. All tests shall be performed at 23 5 . 6.2. The purchaser may designate the flaring test and hydraulic test. In this case, test items, sampling method and criterion of acceptance shall be consulted with the
22、manufacturer. 6.3. Test standards EDS-T-7113 Method of Tensile Test for Metallic Materials EDS-T-7116 Method of Flattening Test for Metallic Materials EDS-T-7122 Method of Expanding Test for Metallic Tubes EDS-T-7143 Method of Salt Spray Test EDS-T-7144 Method of Test Piece Preparation for Chemical
23、Component Analysis KS B 0801 Test Piece for Tensile Test 7. CROSS INDEX(REFERENCE) Table 7. Cross Index EDS-M-1808 KS D 3536 DIN 17440 OPEL ASTM SUS 304 TK STS 304 TK X5CrNi 18 10 QS 81810T SUS 304L TK - - - A 269 SUH 409 TK STR 409 (KS D 3732) X6CrTi 12 - SUS 430 TK STS 430 TK X6Cr 17 QS 81415T 8. AUTOMOTIVE RESTRICTED HAZARDOUS SUBSTANCES EDS-M-1808 STAINLESS STEEL TUBES PAGE: 5/4 ISSUED DATE: 1994. 06. 27 REVISED DATE: 2004. 05. 21 VERSION: 5 GM DAEWOO Auto & Technology Materials and components of parts must comply with EDS-A-0101.
